number.wiki
Number

54

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

Abundant Number Harshad / Niven Year

Properties

Parity
Even
Digit count
2
Digit sum
9
Digital root
9
Palindrome
No
Divisor count
8
σ(n) — sum of divisors
120

Primality

Prime factorization: 2 × 3 3

Divisors & multiples

All divisors (8)
1 · 2 · 3 · 6 · 9 · 18 · 27 · 54
Aliquot sum (sum of proper divisors): 66
Factor pairs (a × b = 54)
1 × 54
2 × 27
3 × 18
6 × 9
First multiples
54 · 108 · 162 · 216 · 270 · 324 · 378 · 432 · 486 · 540

Representations

In words
fifty-four
Ordinal
54th
Roman numeral
LIV
Binary
110110
Octal
66
Hexadecimal
36

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 54, here are decompositions:

  • 7 + 47 = 54
  • 11 + 43 = 54
  • 13 + 41 = 54
  • 17 + 37 = 54
  • 23 + 31 = 54
ASCII character

As an ASCII codepoint, 54 is 6. Printable ASCII character 6.

Hex color
#000036
RGB(0, 0, 54)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.54.