number.wiki
Number

56

56 is a composite number, even, a calendar year.

Abundant Number Pronic / Oblong Tetrahedral Year

Properties

Parity
Even
Digit count
2
Digit sum
11
Digital root
2
Palindrome
No
Divisor count
8
σ(n) — sum of divisors
120

Primality

Prime factorization: 2 3 × 7

Divisors & multiples

All divisors (8)
1 · 2 · 4 · 7 · 8 · 14 · 28 · 56
Aliquot sum (sum of proper divisors): 64
Factor pairs (a × b = 56)
1 × 56
2 × 28
4 × 14
7 × 8
First multiples
56 · 112 · 168 · 224 · 280 · 336 · 392 · 448 · 504 · 560

Representations

In words
fifty-six
Ordinal
56th
Roman numeral
LVI
Binary
111000
Octal
70
Hexadecimal
38

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 56, here are decompositions:

  • 3 + 53 = 56
  • 13 + 43 = 56
  • 19 + 37 = 56
ASCII character

As an ASCII codepoint, 56 is 8. Printable ASCII character 8.

Hex color
#000038
RGB(0, 0, 56)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.56.