54 (number)

Last updated
53 54 55
Cardinal fifty-four
Ordinal 54th
(fifty-fourth)
Factorization 2 × 33
Divisors 1, 2, 3, 6, 9, 18, 27, 54
Greek numeral ΝΔ´
Roman numeral LIV
Binary 1101102
Ternary 20003
Senary 1306
Octal 668
Duodecimal 4612
Hexadecimal 3616

54 (fifty-four) is the natural number following 53 and preceding 55.

Contents

In mathematics

54 as the sum of three positive squares. Square-sum-54.png
54 as the sum of three positive squares.

In science

Astronomy

In sports

A Rubik's Cube has 54 colored squares Rubiks cube by keqs.jpg
A Rubik's Cube has 54 colored squares
Traditional Japanese symbols of the 54 chapters of the Tale of Genji Genji chapter symbols groupings of 5 elements.svg
Traditional Japanese symbols of the 54 chapters of the Tale of Genji

In other fields

54 is also:


See also

Related Research Articles

78 (seventy-eight) is the natural number following 77 and followed by 79.

90 (ninety) is the natural number following 89 and preceding 91.

27 is the natural number following 26 and preceding 28.

84 (eighty-four) is the natural number following 83 and preceding 85.

36 (thirty-six) is the natural number following 35 and preceding 37.

48 (forty-eight) is the natural number following 47 and preceding 49. It is one third of a gross, or four dozens.

57 (fifty-seven) is the natural number following 56 and preceding 58.

100 or one hundred is the natural number following 99 and preceding 101.

300 is the natural number following 299 and preceding 301.

360 is the natural number following 359 and preceding 361.

400 is the natural number following 399 and preceding 401.

500 is the natural number following 499 and preceding 501.

700 is the natural number following 699 and preceding 701.

600 is the natural number following 599 and preceding 601.

800 is the natural number following 799 and preceding 801.

900 is the natural number following 899 and preceding 901. It is the square of 30 and the sum of Euler's totient function for the first 54 positive integers. In base 10 it is a Harshad number. It is also the first number to be the square of a sphenic number.

2000 is a natural number following 1999 and preceding 2001.

<span class="mw-page-title-main">1,000,000</span> Natural number

One million (1,000,000), or one thousand thousand, is the natural number following 999,999 and preceding 1,000,001. The word is derived from the early Italian millione, from mille, "thousand", plus the augmentative suffix -one.

100,000,000 is the natural number following 99,999,999 and preceding 100,000,001.

240 is the natural number following 239 and preceding 241.

References

  1. "Sloane's A005835 : Pseudoperfect (or semiperfect) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-30.
  2. "Sloane's A076980 : Leyland numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-30.
  3. Sloane, N. J. A. (ed.). "SequenceA025331". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  4. Sloane, N. J. A. (ed.). "SequenceA025323". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  5. "Sloane's A051871 : 19-gonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-30.
  6. "Sloane's A005349 : Niven (or Harshad) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-30.
  7. Sloane, N. J. A. (ed.). "SequenceA007053(Number of primes <= 2^n)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2022-06-02.
  8. Sloane, N. J. A. (ed.). "SequenceA005727(n-th derivative of x^x at x=1. Also called Lehmer-Comtet numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.