Properties of the Number 21162

Twenty-One Thousand One Hundred Sixty-Two

Basics

Value: 21161 → 21162 → 21163

Parity: even

Prime: No

Previous Prime: 21157

Next Prime: 21163

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 3527

Divisors: 1, 2, 3, 6, 3527, 7054, 10581, 21162

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001010101010

Octal: 51252

Duodecimal: 102B6

Hexadecimal: 52aa

Square: 447830244

Square Root: 145.47164672196433

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

Numbers k such that there is 1 prime between 100·k and 100·k + 99. A186393

Decimal representation of the middle column of the "Rule 41" elementary cellular automaton starting with a single ON (black) cell. A266613

a(n) = number of 9-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..80]. A178884

Expansion of ∏_k>=1 (1 + x^k) * (1 + x^2·k) * (1 + x^3·k) * (1 + x^4·k). A327046

Anagraprod Integers. Integers N that reproduce their multiset of digits when all the products of two successive digits of N are done (and considered together). A296451

Partial sums of A334136. A332264

Expansion of e.g.f. 1/(1 + x/8·log(1 - 4·x)). A354328

a(n) = ∑_{i,j,k in Z and i² + j² + k² <= n} i² + j² + k². A14203

Smallest numbers containing exactly n smaller numbers when written as English number names. A159453

Number of odd partitions in the multiset of intersections of the set of partitions of n with itself; also number of distinct partitions in that multiset. A274521