Properties of the Number 87221

Eighty-Seven Thousand Two Hundred Twenty-One

Basics

Value: 87220 → 87221 → 87222

Parity: odd

Prime: Yes

Previous Prime: 87211

Next Prime: 87223

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 87221

Divisors: 1, 87221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010010110101

Octal: 252265

Duodecimal: 42585

Hexadecimal: 154b5

Square: 7607502841

Square Root: 295.33201655086435

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

Lesser of twin primes p1 such that p1·p2+-6 are prime numbers. A174955

Primes p such that p+2, n*(p+2)+6 and p*(p+2)+8 are also prime. A130735

Number of (n+1)X(n+1) -7..7 symmetric matrices with every 2X2 subblock having sum zero and one, two or three distinct values. A211445

Expansion of 1/((1-7·x)*(1-9·x)*(1-10·x)). A20970

Number of compositions (ordered partitions) of n into powers of 4. A87221