Properties of the Number 81598

Eighty-One Thousand Five Hundred Ninety-Eight

Basics

Value: 81597 → 81598 → 81599

Parity: even

Prime: No

Previous Prime: 81569

Next Prime: 81611

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 11 × 3709

Divisors: 1, 2, 11, 22, 3709, 7418, 40799, 81598

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111010111110

Octal: 237276

Duodecimal: 3B27A

Hexadecimal: 13ebe

Square: 6658233604

Square Root: 285.6536364200533

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

Let f(1) = 1 + i (where i denotes the imaginary unit) and for n > 0, f(n+1) is the Gaussian prime in the first quadrant (with positive real part and nonnegative imaginary part) with least modulus that divides 1 + ∏_k=1..n f(k) (in case of a tie minimize the imaginary part); a(n) is the imaginary part of f(n). A320104

Number of walks within N² (the first quadrant of Z²) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, 1), (0, -1), (0, 1), (1, -1), (1, 0), (1, 1)}. A151488

Let n = 10x + y where 0 <= y <= 9, x >= 0. Then a(n) = 7x+y. A81598