Properties of the Number 91981

Ninety-One Thousand Nine Hundred Eighty-One

Basics

Value: 91980 → 91981 → 91982

Parity: odd

Prime: No

Previous Prime: 91969

Next Prime: 91997

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 59 × 1559

Divisors: 1, 59, 1559, 91981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110011101001101

Octal: 263515

Duodecimal: 45291

Hexadecimal: 1674d

Square: 8460504361

Square Root: 303.28369557231395

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, 0, 0), (0, 0, -1), (1, 0, -1), (1, 1, 1)}. A149682

Poincaré series [or Poincare series] (or Molien series) for GL₂(4):2. A91981