Properties of the Number 81173

Eighty-One Thousand One Hundred Seventy-Three

Basics

Value: 81172 → 81173 → 81174

Parity: odd

Prime: Yes

Previous Prime: 81163

Next Prime: 81181

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 81173

Divisors: 1, 81173

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110100010101

Octal: 236425

Duodecimal: 3AB85

Hexadecimal: 13d15

Square: 6589055929

Square Root: 284.9087573241651

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

G.f. A(x) satisfies A(x) = 1 / (1 - x - x * (1 + x + x² + x³) * A(x⁴)). A367657

a(1) = 2, then a(n) = greatest prime factor of (a(n-1)²+2). A81173