56 (number)

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55 56 57
Cardinal fifty-six
Ordinal 56th
(fifty-sixth)
Factorization 23 × 7
Divisors 1, 2, 4, 7, 8, 14, 28, 56
Greek numeral ΝϚ´
Roman numeral LVI, lvi
Binary 1110002
Ternary 20023
Senary 1326
Octal 708
Duodecimal 4812
Hexadecimal 3816

56 (fifty-six) is the natural number following 55 and preceding 57.

Contents

Mathematics

Regular 56-gon, associated by the Pythagoreans with Typhon Regular polygon 56.svg
Regular 56-gon, associated by the Pythagoreans with Typhon

56 is a composite number, and a tetranacci number [1] .

Mythology

Plutarch [2] states that the Pythagoreans associated a polygon of 56 sides with Typhon and that they associated certain polygons of smaller numbers of sides with other figures in Greek mythology.

Organizations

References

  1. Sloane, N. J. A. (ed.). "SequenceA000078(Tetranacci numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation. Retrieved 2016-05-30.
  2. Plutarch, Moralia V: 30