number.wiki
Number

47

47 is a prime, odd, a calendar year.

Cousin Prime Deficient Number Lucas Prime Sexy Prime Squarefree Year

Properties

Parity
Odd
Digit count
2
Digit sum
11
Digital root
2
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
48

Primality

47 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 47
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 47)
1 × 47
First multiples
47 · 94 · 141 · 188 · 235 · 282 · 329 · 376 · 423 · 470

Representations

In words
forty-seven
Ordinal
47th
Roman numeral
XLVII
Binary
101111
Octal
57
Hexadecimal
2F

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 43 (gap of 4)
  • Next prime: 53 (gap of 6)

Pair status: cousin with 43, sexy with 53.

ASCII character

As an ASCII codepoint, 47 is /. Printable ASCII character /.

Hex color
#00002F
RGB(0, 0, 47)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.47.