Properties of the Number 81455

Eighty-One Thousand Four Hundred Fifty-Five

Basics

Value: 81454 → 81455 → 81456

Parity: odd

Prime: No

Previous Prime: 81439

Next Prime: 81457

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 11 × 1481

Divisors: 1, 5, 11, 55, 1481, 7405, 16291, 81455

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111000101111

Octal: 237057

Duodecimal: 3B17B

Hexadecimal: 13e2f

Square: 6634917025

Square Root: 285.403223527696

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) = (1/6) * 2^-n * n! * [xⁿ] Exp(2·x, 1)*(Exp(2·x, 3) - 1), where Exp(x, m) = ∑_k>=0 (x^k / k!)^m. A344559

Final entry of n-th row of triangle in A081454. A81455