Properties of the Number 72221

Seventy-Two Thousand Two Hundred Twenty-One

Basics

Value: 72220 → 72221 → 72222

Parity: odd

Prime: Yes

Previous Prime: 72211

Next Prime: 72223

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 72221

Divisors: 1, 72221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001101000011101

Octal: 215035

Duodecimal: 35965

Hexadecimal: 11a1d

Square: 5215872841

Square Root: 268.73965096353015

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

Prime quadruples: numbers k such that k, k+2, k+6, k+8 are all prime. A7530

Start of a string of exactly 4 consecutive (but disjoint) pairs of twin primes. A35792

Prime numbers containing the string 222. A166580

Primes at which the difference pattern X,2,4,2,Y (X and Y >= 6) occurs in A001223. A52165

Primes where the first digit equals the sum of all the other digits. A156307

Larger of emirp pairs that are merely reversals of their end digits. A263242

Lesser of the first pair of three successive prime pairs (no isolated primes occur in between). Least of the six successive primes which are member of prime pairs. A90953

First of six consecutive primes that are three sets of twin primes. A136143

First of eight consecutive primes that are four sets of twin primes. A136145

Twin primes belonging to packs of four or more twin pairs. A68220