Properties of the Number 12545

Twelve Thousand Five Hundred Forty-Five

Basics

Value: 12544 → 12545 → 12546

Parity: odd

Prime: No

Previous Prime: 12541

Next Prime: 12547

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 13 × 193

Divisors: 1, 5, 13, 65, 193, 965, 2509, 12545

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000100000001

Octal: 30401

Duodecimal: 7315

Hexadecimal: 3101

Square: 157377025

Square Root: 112.0044641967453

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 integer partitions of n with unimodal run-lengths. A332280

Smaller sides (a) in (a,a,a+1)-integer triangle with integer area. A103974

Odd octagonal numbers: (2n+1)*(6n+1). A14641

Positive integers k such that (k+1)⁴ has a divisor congruent to -1 modulo k. A350916

Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths starting at each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 4, n >= 2. A214022

Numbers of the form m² + 1 that can be expressed in more than one way as j² + k² with j > k > 1. A299708

a(n) = 3·a(n-1) + 3·a(n-2) - a(n-3); a(0)=1, a(1)=1, a(2)=5. A120893

Sequence a(n) = 2 + 3·A001519(n+1) appearing in a certain four circle touching problem together with A246639. A246638

Euler pseudoprimes to base 8: composite integers such that abs(8^{(n - 1}/2)) == 1 mod n. A262055

a(n) = (n-2)⁴ - a(n-1) - a(n-2), with a(1) = a(2) = 0. A152729