number.wiki
Number

21,059

21,059 is a prime, odd.

Deficient Number Prime Squarefree Twin Prime

Properties

Parity
Odd
Digit count
5
Digit sum
17
Digital root
8
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
21,060

Primality

21,059 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 21059
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 21,059)
1 × 21059
First multiples
21,059 · 42,118 · 63,177 · 84,236 · 105,295 · 126,354 · 147,413 · 168,472 · 189,531 · 210,590

Representations

In words
twenty-one thousand fifty-nine
Ordinal
21059th
Binary
101001001000011
Octal
51103
Hexadecimal
5243

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 21,031 (gap of 28)
  • Next prime: 21,061 (gap of 2)

Pair status: twin with 21061.

Unicode codepoint
U+5243
Other letter (Lo)

UTF-8 encoding: E5 89 83 (3 bytes).

Hex color
#005243
RGB(0, 82, 67)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.82.67.