Properties of the Number 15530

Fifteen Thousand Five Hundred Thirty

Basics

Value: 15529 → 15530 → 15531

Parity: even

Prime: No

Previous Prime: 15527

Next Prime: 15541

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 1553

Divisors: 1, 2, 5, 10, 1553, 3106, 7765, 15530

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11110010101010

Octal: 36252

Duodecimal: 8BA2

Hexadecimal: 3caa

Square: 241180900

Square Root: 124.61942063739504

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

The successive approximations up to 7ⁿ for 7-adic integer 2^1/5. A309450

Expansion of ψ(x⁴) / f(-x) in powers of·where ψ(), f() are Ramanujan θ functions. A226635

Expansion of ∏_{i>=1, j>=1, k>=1} 1/(1 - x^i·j*k)^i·j*k. A318413

Let s(n,j) be ∑_i=1..j (prime(primepi(n) + i) mod n). Numbers n such that there exists j with s(n,j) = n. A274423

Numbers k with Goldbach partitions (p,q) and (r,s) such that k | (p·q -1) and k | (r·s +1). A336584

Number of compositions of n where the difference between largest and smallest parts equals 4 and adjacent parts are unequal. A214273

a(n) = sigma₃(n) - sigma₂(n). A92349

Numbers n such that 5·10ⁿ + 4·R_n + 3 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103015

a(n) is the least k such that for numbers x >= k, PrimePi(n,x) > PrimePi(n-1,x), where PrimePi(n,x) is the number of n-almost-primes <= x. A180126

Number of fixed tree-like convex polyominoes. A196593