Properties of the Number 81749

Eighty-One Thousand Seven Hundred Forty-Nine

Basics

Value: 81748 → 81749 → 81750

Parity: odd

Prime: Yes

Previous Prime: 81737

Next Prime: 81761

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 81749

Divisors: 1, 81749

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111101010101

Octal: 237525

Duodecimal: 3B385

Hexadecimal: 13f55

Square: 6682899001

Square Root: 285.9178203610261

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

Balanced primes p of the form (r+q+s-1)/2, where r, q, s are consecutive primes. A129191

Prime numbers that are the sum of consecutive prime numbers with the final digit 3 (primes in A030431). A129078

a(n) = n-th smallest prime congruent to 1 modulo prime(n). A234387

Continued fraction for e/5. A81749