Properties of the Number 13561

Thirteen Thousand Five Hundred Sixty-One

Basics

Value: 13560 → 13561 → 13562

Parity: odd

Prime: No

Previous Prime: 13553

Next Prime: 13567

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 71 × 191

Divisors: 1, 71, 191, 13561

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11010011111001

Octal: 32371

Duodecimal: 7A21

Hexadecimal: 34f9

Square: 183900721

Square Root: 116.45170672858342

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

Number of partitions of 4n into 4 parts. A238340

Number of pairwise coprime strict compositions of n, where a singleton is always considered coprime. A337562

T(n,k) = number of n-bead necklaces labeled with numbers -k..k not allowing reversal, with sum zero and first and second differences in -k..k. A209007

Initial terms associated with the arithmetic progressions in A086786. A87308

Number of partitions of n*(n+1)*(n+2) into parts that are at most n. A258297

Leading entries in triangle in A090548 and A113470. A90547

The least nonsquare number s having exactly n twos in the periodic part of the continued fraction of sqrt(s). A206582

Number of partitions of n*(n-1)/2 into at most four parts. A274099

Number of up-down involutions of length n. A72187

a(n) = sum of n-th column in array in A100452. A100454