Properties of the Number 81461

Eighty-One Thousand Four Hundred Sixty-One

Basics

Value: 81460 → 81461 → 81462

Parity: odd

Prime: No

Previous Prime: 81457

Next Prime: 81463

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 29 × 53 ²

Divisors: 1, 29, 53, 1537, 2809, 81461

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111000110101

Octal: 237065

Duodecimal: 3B185

Hexadecimal: 13e35

Square: 6635894521

Square Root: 285.41373477812874

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

Consider the mapping f(a/b) = (a²+b³)/(a³+b²) from rationals to rationals. Starting with 1/2 (a=1, b=2) and applying the mapping to each new (reduced) rational number gives 1/2, 9/5, 103/377, ... . Sequence gives values of the numerators. A81461