Properties of the Number 54687

Fifty-Four Thousand Six Hundred Eighty-Seven

Basics

Value: 54686 → 54687 → 54688

Parity: odd

Prime: No

Previous Prime: 54679

Next Prime: 54709

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 18229

Divisors: 1, 3, 18229, 54687

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101010110011111

Octal: 152637

Duodecimal: 27793

Hexadecimal: d59f

Square: 2990667969

Square Root: 233.85251762596013

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

∑_T(i,j), 0<=j<=i, 0<=i<=n, where T is the array in A026386. A26396

Numbers k such that both the k-th and (k+1)-th primes have the same sum of digits squared but different sets of digits. A109183

a(n) = (7·5ⁿ - 1)/2. A198766

Record terms of A349664. A349665

a(n) is the period of the oscillating pattern formed by a diagonal line of 2·n cells in the Life-like cellular automaton B2e3ijkn4cz5/S236. A323382

a(n+1) = 1 + ∑_k=0..n binomial(n,k)*a(k)*a(n-k) for n >= 0 with a(0) = 1. A54687