number.wiki
Number

21,773

21,773 is a prime, odd.

Deficient Number Prime Sexy Prime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
20
Digital root
2
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
21,774

Primality

21,773 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 21773
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 21,773)
1 × 21773
First multiples
21,773 · 43,546 · 65,319 · 87,092 · 108,865 · 130,638 · 152,411 · 174,184 · 195,957 · 217,730

Representations

In words
twenty-one thousand seven hundred seventy-three
Ordinal
21773rd
Binary
101010100001101
Octal
52415
Hexadecimal
550D

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 21,767 (gap of 6)
  • Next prime: 21,787 (gap of 14)

Pair status: sexy with 21767.

Unicode codepoint
U+550D
Other letter (Lo)

UTF-8 encoding: E5 94 8D (3 bytes).

Hex color
#00550D
RGB(0, 85, 13)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.85.13.