Properties of the Number 526

Five Hundred Twenty-Six

Basics

Value: 525 → 526 → 527

Parity: even

Prime: No

Previous Prime: 523

Next Prime: 541

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 263

Divisors: 1, 2, 263, 526

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1000001110

Octal: 1016

Duodecimal: 37A

Hexadecimal: 20e

Square: 276676

Square Root: 22.93468988235943

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 primes doubled; even semiprimes. A100484

a(n) = binomial(n+1, 2) + n - 1 = n*(n+3)/2 - 1. A34856

Centered pentagonal numbers: (5n²+5n+2)/2; crystal ball sequence for 3.3.3.4.4. planar net. A5891

Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity). A6753

Number of integer partitions of n such that every distinct submultiset has a different average. A316313

Matula-Goebel numbers of lone-child-avoiding rooted trees. A291636

Numbers k such that Bernoulli number B_k has denominator 6. A51222

Number of 2's in all partitions of n. A24786

Numbers m such that the Bernoulli number B_2·m has denominator 30. A51225

Indices in A146326 where records occur. A146345