Properties of the Number 556

Five Hundred Fifty-Six

Basics

Value: 555 → 556 → 557

Parity: even

Prime: No

Previous Prime: 547

Next Prime: 557

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 139

Divisors: 1, 2, 4, 139, 278, 556

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1000101100

Octal: 1054

Duodecimal: 3A4

Hexadecimal: 22c

Square: 309136

Square Root: 23.57965224510319

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

Total number of parts in all partitions of n. Also, sum of largest parts of all partitions of n. A6128

Number of normal patterns matched by compositions of n. A335456

Number of partitions of n into parts >= 3. A8483

Number of partitions of n into distinct parts such that number of parts is even. A67661

Numbers k such that the k-th composition in standard order is a permutation (of an initial interval). A333218

Untouchable numbers, also called nonaliquot numbers: impossible values for the sum of aliquot parts function (A001065). A5114

Triangle read by rows: T(n,k) = sum of k-th largest elements in all partitions of n. A181187

The a(n)-th composition in standard order (A066099) has alternating sum 0. A344619

Sums of four consecutive primes. A34963

Expansion of 6-dimensional cusp form (η(q) * η(q³))⁶ in powers of q. A7332