Properties of the Number 64081

Sixty-Four Thousand Eighty-One

Basics

Value: 64080 → 64081 → 64082

Parity: odd

Prime: Yes

Previous Prime: 64067

Next Prime: 64091

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 64081

Divisors: 1, 64081

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111101001010001

Octal: 175121

Duodecimal: 31101

Hexadecimal: fa51

Square: 4106374561

Square Root: 253.1422524984717

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) = a(n-1) + a(n-2) - 2, a(0) = 4, a(1) = 3. A211

Primes of the form 2·p² - 1, where p is prime. A92057

Number of maximum matchings in the n-Moebius ladder M_n. A20878

a(n) = 648·n² - 72·n + 1. A154514

a(n) is the number of perfect matchings of an edge-labeled 2 X (2n+1) Mobius grid graph. A162483

Numerators of continued fraction convergents to sqrt(890). A42720

Expansion of (1 - x + 3·x³ - 2·x⁴ - 3·x⁵)/(1 - 2·x + x³). A48162

Primes of the form 648·k² - 72·k + 1. A154511

Primes of the form 2·p^k-1, where p is prime and k > 1. A178491

a(n) = position of the first occurrence of n in A245714. A245723