Properties of the Number 81409

Eighty-One Thousand Four Hundred Nine

Basics

Value: 81408 → 81409 → 81410

Parity: odd

Prime: Yes

Previous Prime: 81401

Next Prime: 81421

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 81409

Divisors: 1, 81409

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111000000001

Octal: 237001

Duodecimal: 3B141

Hexadecimal: 13e01

Square: 6627425281

Square Root: 285.3226244096321

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

Primes of the form 1024n + 513. A105132

Primes of the form 512·k+1. A76339

Primes which are triangular numbers plus 3. A159047

Primes of the form 20·k² + 32·k + 13. A154414

a(n) = binomial(n!, lcm(1,...,n)). A81409