Properties of the Number 50391

Fifty Thousand Three Hundred Ninety-One

Basics

Value: 50390 → 50391 → 50392

Parity: odd

Prime: No

Previous Prime: 50387

Next Prime: 50411

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11 × 509

Divisors: 1, 3, 9, 11, 33, 99, 509, 1527, 4581, 5599

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1100010011010111

Octal: 142327

Duodecimal: 251B3

Hexadecimal: c4d7

Square: 2539252881

Square Root: 224.47939771836525

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

Integers k for which {prime(1), prime(2), ..., prime(k)} (mod 4) is biased towards 1. A96628

T(n,k)=Number of -k..k arrays of n elements with first and second differences also in -k..k. A201088

Number of reversible strings with n-1 beads of 2 colors. 6 beads are black. Strings are not palindromic. A32093

Number of n-element subsets of [n+6] having an even sum. A282082

Expansion of q^-5/24 * (η(q³) * η(q⁶))³ / (η(q) * η(q²))⁴ in powers of q. A182031

Number of -3..3 arrays of n elements with first and second differences also in -3..3. A201083

Number of -n..n arrays of 7 elements with first and second differences also in -n..n. A201092

Number of cycles in an n X n grid where the cycle cannot touch itself orthogonally or diagonally and must contain at least one inside point. A368657

Reversion of Euler totient function A000010. A50391