Properties of the Number 21590

Twenty-One Thousand Five Hundred Ninety

Basics

Value: 21589 → 21590 → 21591

Parity: even

Prime: No

Previous Prime: 21589

Next Prime: 21599

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 17 × 127

Divisors: 1, 2, 5, 10, 17, 34, 85, 127, 170, 254

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101010001010110

Octal: 52126

Duodecimal: 105B2

Hexadecimal: 5456

Square: 466128100

Square Root: 146.935359937627

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

Matrix inverse of triangle A022166. A135950

Triangle read by rows generated from (x-1)*(x-2)*(x-4)*... A158474

Second elementary symmetric function of the first n terms of (1,2,4,8,...). A203241

Eigentriangle of triangle A022166: T(n,k) = A022166(n,k) * A125812(k). A143774

Number of partitions of 8ⁿ into parts that are at most n with at least one part of each size. A239167

Number of partitions of n, where the difference between the number of odd parts and the number of even parts is 5. A240014

Number of set partitions of [n] into exactly four blocks such that all odd elements are in blocks with an odd index and all even elements are in blocks with an even index. A274868

G.f. A(x) satisfies A(x) = sqrt( (1 + 2·x) * (1 + 2·x*A(x)) ). A379326

The growth series for the affine Weyl group F₄. A266784

The λ word generated by log(3)/log(2). A216448