Properties of the Number 81137

Eighty-One Thousand One Hundred Thirty-Seven

Basics

Value: 81136 → 81137 → 81138

Parity: odd

Prime: No

Previous Prime: 81131

Next Prime: 81157

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 67 × 173

Divisors: 1, 7, 67, 173, 469, 1211, 11591, 81137

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110011110001

Octal: 236361

Duodecimal: 3AB55

Hexadecimal: 13cf1

Square: 6583212769

Square Root: 284.8455721965851

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 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, 1), (0, 0, 1), (0, 1, -1), (1, 0, 0)}. A149860

Numbers with at least three digits and with the property that the sum of the squares of the first and last digits equals the number obtained when the first and last digits are deleted. A274944

The Staircase Sequence: numbers with at least three digits and with the property that the sum of the squares of the first and last digits equals the number obtained when the first and last digits are deleted. A274945

Duplicate of A027474. A81137