Properties of the Number 27221

Twenty-Seven Thousand Two Hundred Twenty-One

Basics

Value: 27220 → 27221 → 27222

Parity: odd

Prime: No

Previous Prime: 27211

Next Prime: 27239

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 163 × 167

Divisors: 1, 163, 167, 27221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101001010101

Octal: 65125

Duodecimal: 13905

Hexadecimal: 6a55

Square: 740982841

Square Root: 164.98787834262248

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

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

Semiprimes whose prime factors are of equal binary length and which differ from each other in one bit position only. A261073

Semiprimes whose prime factors differ from each other in one bit position only. A261077

a(n) = (4·n+3)*(4·n+7). A85027

a(n) is the numerator of x(n) = (2·x(n-1) + 1/n) mod 1, with x(0) = 0. A374332

Expansion of 1/(1 - 2·x + 3·x² + 2·x³ + x⁴). A375255

Number of partitions of n*(n+1)/2 with at most four parts that can be obtained from grouping (with parentheses) a permutation of the sum 1+2+...+n. A160438