Properties of the Number 51620

Fifty-One Thousand Six Hundred Twenty

Basics

Value: 51619 → 51620 → 51621

Parity: even

Prime: No

Previous Prime: 51613

Next Prime: 51631

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 5 × 29 × 89

Divisors: 1, 2, 4, 5, 10, 20, 29, 58, 89, 116

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100100110100100

Octal: 144644

Duodecimal: 25A58

Hexadecimal: c9a4

Square: 2664624400

Square Root: 227.2003521124032

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

Number of nonisomorphic unrooted unicursal planar maps with n edges (unicursal means that exactly two vertices are of odd valency; there is an Eulerian path). A69724

a(n) = (4·n+8)(!⁴)/8(!⁴), related to A034177(n+1) ((4·n+4)(!⁴) quartic, or 4-factorials). A51620