Properties of the Number 85121

Eighty-Five Thousand One Hundred Twenty-One

Basics

Value: 85120 → 85121 → 85122

Parity: odd

Prime: Yes

Previous Prime: 85109

Next Prime: 85133

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 85121

Divisors: 1, 85121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100110010000001

Octal: 246201

Duodecimal: 41315

Hexadecimal: 14c81

Square: 7245584641

Square Root: 291.75503423248756

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

Fibonacci + Goldbach (dual sequence to A216275). a(1)=5, a(2)=7 and for n>=3, a(n) = g(a(n-1) + a(n-2)), where for m>=3, g(2·m) is the maximal prime p < 2·m such that 2·m - p is prime. A216835

Row 3 of A328464: a(n) = A276156(8n - 4) / 6. A328466

Numbers k such that both A381019(k) and A381019(k+1) are composite. A381120

Primes resulting from procedure described in A048393. A48394

Prime numbers p such that the order of the (p-1)-th Bell number B(p-1) is a power of 2 modulo p. A351688

Number of ways of writing n as the sum of three odd squares. A85121