Properties of the Number 13245

Thirteen Thousand Two Hundred Forty-Five

Basics

Value: 13244 → 13245 → 13246

Parity: odd

Prime: No

Previous Prime: 13241

Next Prime: 13249

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 883

Divisors: 1, 3, 5, 15, 883, 2649, 4415, 13245

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001110111101

Octal: 31675

Duodecimal: 77B9

Hexadecimal: 33bd

Square: 175430025

Square Root: 115.08692367076287

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

Decimal representation of permutations of lengths 1, 2, 3, ... arranged lexicographically. A30299

a(n) = n*(n² - 6·n + 11)/6. A50407

a(n) = (3 + 2·n + 6·n² + 4·n³)/3. A166464

Centered 14-gonal numbers. A69127

Number of distinct values taken by the entropy for permutations of [1..n], where the entropy of a permutation π is ∑_k=1..n (π(k)-k)². A126972

Number of (12345, 13245, 21345, 23145, 31245, 32145)-avoiding permutations. A54872

Permutations of 12345: Numbers having each of the decimal digits 1,...,5 exactly once, and no other digit. A178475

First number in the n-th row of A172002. A168388

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 169", based on the 5-celled von Neumann neighborhood. A286173

Positive numbers having the same set of digits in base 7 and base 10. A37440