Properties of the Number 522

Five Hundred Twenty-Two

Basics

Value: 521 → 522 → 523

Parity: even

Prime: No

Previous Prime: 521

Next Prime: 523

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 29

Divisors: 1, 2, 3, 6, 9, 18, 29, 58, 87, 174

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000001010

Octal: 1012

Duodecimal: 376

Hexadecimal: 20a

Square: 272484

Square Root: 22.847319317591726

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

Average of twin prime pairs. A14574

a(n) = ∑_k=1..n k·floor(n/k); also ∑_k=1..n σ(k) where σ(n) = sum of divisors of n (A000203). A24916

Number of partitions of n into distinct parts >= 2. A25147

Numbers whose digits are primes. A46034

Infinite sequence starting with a(0)=0 such that A049820(a(k)) = a(k-1) for all k>=1, where A049820(n) = n - (number of divisors of n). A259934

Area A of the triangles such that A and the sides are integers. A188158

Coordination sequence for "crs" 3D uniform tiling formed from tetrahedra and truncated tetrahedra. A299268

Number of partitions of n in which the least part is odd. A26804

G.f.: ∏_k>=1 (1 + 2·x^k). A32302

Numbers that are the sum of 7 positive 5th powers. A3352