Properties of the Number 15145

Fifteen Thousand One Hundred Forty-Five

Basics

Value: 15144 → 15145 → 15146

Parity: odd

Prime: No

Previous Prime: 15139

Next Prime: 15149

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 13 × 233

Divisors: 1, 5, 13, 65, 233, 1165, 3029, 15145

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11101100101001

Octal: 35451

Duodecimal: 8921

Hexadecimal: 3b29

Square: 229371025

Square Root: 123.06502346320826

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

a(n) = n! * ∑_k=0..n kⁿ/k!. A256016

Determinant of the n X n matrix with (i,j)-entry equal to 1 or 0 according as i + j is squarefree or not. A228549

Total number of elements in all primitive subsets of the integers 1 to n. A87077

Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(n,k) = n! * ∑_j=0..n j^k/j!. A337085

Convolution of natural numbers n >= 1 with Lucas numbers L(k) for k >= -2. A33818

[s(k)-s(j)]/8, where the pairs (k,j) are given by A205867 and A205868, and s(k) denotes the (k+1)-st Fibonacci number. A205870

Odd numbers k such that σ(k) + σ(k+2) > 2*σ(k+1); odd terms in A053228. A358395

a(n) = n! * ∑_k=0..n k⁵ / k!. A368719

Numbers k such that the continued fraction for sqrt(k) has period 49. A20388

Pisot sequence L(2,7). A48576