Properties of the Number 81079

Eighty-One Thousand Seventy-Nine

Basics

Value: 81078 → 81079 → 81080

Parity: odd

Prime: No

Previous Prime: 81077

Next Prime: 81083

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 89 × 911

Divisors: 1, 89, 911, 81079

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011110010110111

Octal: 236267

Duodecimal: 3AB07

Hexadecimal: 13cb7

Square: 6573804241

Square Root: 284.7437444440176

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

Numbers k such that both k and k + 3 are consecutive deficient numbers. A317049

Numbers n such that 2^σ(n-n) == 1 (mod n). A277172

Positive integers k such that 2^k+2 - 1 is divisible by k. A381010

a(n) = 2ⁿ⁺² mod n. A212844

a(n) = Lucas(4·n+2) - 3 = 5·Fibonacci(2·n)*Fibonacci(2·n+2). A81079

a(n) = sum of numbers formed using the digits of next n numbers. A81993