Properties of the Number 21059

Twenty-One Thousand Fifty-Nine

Basics

Value: 21058 → 21059 → 21060

Parity: odd

Prime: Yes

Previous Prime: 21031

Next Prime: 21061

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 21059

Divisors: 1, 21059

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101001001000011

Octal: 51103

Duodecimal: 1022B

Hexadecimal: 5243

Square: 443481481

Square Root: 145.11719401917887

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Balanced primes of order eleven. A96703

Number of increasing mobiles with n elements. A29768

Numbers k such that (3^k + 8^k)/11 is prime. A128068

Number of integer partitions of n whose weighted sum is not divisible by n. A362560

Primes p such that the decimal digits of p² can be partitioned into two or more nonzero squares. A48646

Primes and their indices such that when their respective SOD's are both prime, the SOD of the index is the nextprime of the prime SOD. A117458

Primes associated with groups in A076077. A76076

Primes q (except greater of twin primes) with result 2 under iterations of {r mod (max prime p < r)} starting at r = q. A175080

Supersafe primes. A181841

Non-palindromic balanced primes in base 2. A256081