Properties of the Number 18575

Eighteen Thousand Five Hundred Seventy-Five

Basics

Value: 18574 → 18575 → 18576

Parity: odd

Prime: No

Previous Prime: 18553

Next Prime: 18583

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 ² × 743

Divisors: 1, 5, 25, 743, 3715, 18575

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100010001111

Octal: 44217

Duodecimal: A8BB

Hexadecimal: 488f

Square: 345030625

Square Root: 136.2901317043901

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

Numbers that are the sum of 6 positive 7th powers. A3373

T(n,k)=Number of nXk 0..1 arrays with no 1 adjacent to 3 king-move neighboring 1s. A297094

Expansion of r(q⁵) / r(q)⁵ in powers of q where r() is the Rogers-Ramanujan continued fraction. A285585

Irregular triangle read by rows: T(n,k) = number of meanders with n bridges in which the first bridge is bridge k. A259974

a(n) = ∑_k=0..n f(k)*f(n-k) where f(k) = A002124(k). A2125

Composite numbers n such that the sum of divisors of n, σ(n), divided by the number of divisors, d(n) and σ(n) minus n are both rational squares. A49226

Odd terms of A059756. A111042

Number of n edge connected unsensed planar maps with an external face in which all internal faces are triangles. A378343

Number of meanders in which first bridge is 5. A6661

Let f(x) = 1 -x³+ ∑_j>=2 (x^{2^j}-x^{1+2^j}). Then a(n) is n times the coefficient of xⁿ in the expansion of log(f(x)). A271726