Properties of the Number 87721

Eighty-Seven Thousand Seven Hundred Twenty-One

Basics

Value: 87720 → 87721 → 87722

Parity: odd

Prime: Yes

Previous Prime: 87719

Next Prime: 87739

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 87721

Divisors: 1, 87721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101011010101001

Octal: 253251

Duodecimal: 42921

Hexadecimal: 156a9

Square: 7694973841

Square Root: 296.17731175766994

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

Primes of the form 3·m² - 2. A201715

Primes p such that the largest prime divisor of p⁴+1 is less than p. A102326

Write sin(x)/x = ∏_n>=1 (1 + g_n*x^2·n); a(n) = numerator(g_n). A170916

Strictly increasing domain of A005185. A87721