Properties of the Number 57661

Fifty-Seven Thousand Six Hundred Sixty-One

Basics

Value: 57660 → 57661 → 57662

Parity: odd

Prime: No

Previous Prime: 57653

Next Prime: 57667

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 23 ² × 109

Divisors: 1, 23, 109, 529, 2507, 57661

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110000100111101

Octal: 160475

Duodecimal: 29451

Hexadecimal: e13d

Square: 3324790921

Square Root: 240.12704970494266

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

a(n) = 60·n² + 1. A158673

a(n) = 109·n². A174339

a(n) = ∑_k=0..n (-1)^{n - k} * A357340(n, k). A357341

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, 0), (1, -1, 1), (1, 0, -1), (1, 1, 0)}. A149301

a(n) = ∑_k=1..n lcm(n,k)/n. A57661