Properties of the Number 57918

Fifty-Seven Thousand Nine Hundred Eighteen

Basics

Value: 57917 → 57918 → 57919

Parity: even

Prime: No

Previous Prime: 57917

Next Prime: 57923

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 7 ² × 197

Divisors: 1, 2, 3, 6, 7, 14, 21, 42, 49, 98

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110001000111110

Octal: 161076

Duodecimal: 29626

Hexadecimal: e23e

Square: 3354494724

Square Root: 240.6615881273952

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

Perrin sequence (or Perrin numbers, or Ondrej Such sequence): a(n) = a(n-2) + a(n-3) with a(0) = 3, a(1) = 0, a(2) = 2. A1608

Let u be any string of n digits from {0,...,7}; let f(u) = number of distinct primes, not beginning with 0, formed by permuting the digits of u to a base-8 number; then a(n) = max_u f(u). A65849

Number of minimal total dominating sets in the n-cycle graph. A300738

a(n) = round(rⁿ) where r is the smallest Pisot number (real root r=1.3247179.. of x³-x-1). A205579

Perrin numbers which are divisible by their digital root. A117959

Numbers n such that the sum of the Euler totient functions of integers up to n is a square. A130697

Number of pairs of numbers (r,s) each less than n such that (r,s,n) is in geometric progression. A57918

Padovan numbers for which the digital root is also a Padovan number. A117598