Properties of the Number 6557

Six Thousand Five Hundred Fifty-Seven

Basics

Value: 6556 → 6557 → 6558

Parity: odd

Prime: No

Previous Prime: 6553

Next Prime: 6563

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 79 × 83

Divisors: 1, 79, 83, 6557

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100110011101

Octal: 14635

Duodecimal: 3965

Hexadecimal: 199d

Square: 42994249

Square Root: 80.97530487747484

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

Products of 2 successive primes. A6094

a(n) = (2·n+5)*(2·n+1). A78371

Numbers that are products of (at least two) consecutive primes. A97889

a(n) = 9ⁿ - n. A24102

Product of the n-th cousin prime pair. A143206

Numbers k such that exactly one d, 2 <= d <= k/2, exists which divides binomial(k-d-1, d-1) and is not coprime to k. A178071

Sequence of pairwise relatively prime numbers of class P₃ (see comment). A275246

Numbers having no 0's and not more than one 1 in their representation in base 3. A188341

S₅ sequence in partition of integers > 1 described in A240521. A240522

Numbers having exactly two distinct prime factors p, q with q = p+4. A143203