Properties of the Number 64256

Sixty-Four Thousand Two Hundred Fifty-Six

Basics

Value: 64255 → 64256 → 64257

Parity: even

Prime: No

Previous Prime: 64237

Next Prime: 64271

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ⁸ × 251

Divisors: 1, 2, 4, 8, 16, 32, 64, 128, 251, 256

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111101100000000

Octal: 175400

Duodecimal: 31228

Hexadecimal: fb00

Square: 4128833536

Square Root: 253.48767228407775

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

Octanacci numbers: a(0)=a(1)=...=a(6)=0, a(7)=1; for n >= 8, a(n) = ∑_i=1..8 a(n-i). A79262

Half the number of permutations of 0..n with exactly two maxima. A100575

Lower triangular matrix T, read by rows, such that T(n,0) = 1 and T(n,k) = T(n-1,k) + T²(n-1,k-1) for k>0, where T² is the matrix square of T. A97712

T(n,k)=Number of (n+2)X(k+2) 0..1 matrices with each 3X3 subblock having the same population. A224651

Numbers k such that σ(k) = ψ(k) + φ(k) + ω(k)². A391312

Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 99", based on the 5-celled von Neumann neighborhood. A285823

A(n, k) = (m·k)! [x^k] MittagLefflerE(m, x)^-n, for m = 2, n >= 0, k >= 0; square array read by descending antidiagonals. A326327

T(n, k) = E(n, k)*2^k where E(n,k) are the Eulerian numbers A173018, for n > 0 and 0 <= k <= n-1, additionally T(0,0) = 1. A156365

a(n) = ((4+sqrt(5))*(3+sqrt(5))ⁿ + (4-sqrt(5))*(3-sqrt(5))ⁿ)/2. A163071

Triangle read by rows: T(n,k) (n >= 5, 4 <= k <= n-1) = number of lattice 3-polytopes of width larger than 1, size n, and k vertices. A319958