Properties of the Number 63561

Sixty-Three Thousand Five Hundred Sixty-One

Basics

Value: 63560 → 63561 → 63562

Parity: odd

Prime: No

Previous Prime: 63559

Next Prime: 63577

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 21187

Divisors: 1, 3, 21187, 63561

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111100001001001

Octal: 174111

Duodecimal: 30949

Hexadecimal: f849

Square: 4040000721

Square Root: 252.11306987143686

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

Consider all integer triples (i,j,k), j,k>0, with i³=j³+binomial(k+2,3), ordered by increasing i; sequence gives j values. A54235

a(n) = a(n-2) + a(n-3) + a(n-4) for n>3, a(0)=1, a(1)=a(2)=0, a(3)=2. A277253

a(n) = ∑_{k=0..floor(n/2)} binomial(n-2·k,floor(k/3)). A376695

The number of 654321-avoiding separable permutations of length n. A165523

Smallest k such that 3^k has exactly n 6's in its decimal representation. A63561