Properties of the Number 87491

Eighty-Seven Thousand Four Hundred Ninety-One

Basics

Value: 87490 → 87491 → 87492

Parity: odd

Prime: Yes

Previous Prime: 87481

Next Prime: 87509

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 87491

Divisors: 1, 87491

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010111000011

Octal: 252703

Duodecimal: 4276B

Hexadecimal: 155c3

Square: 7654675081

Square Root: 295.78877598718987

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 p whose period of reciprocal equals (p-1)/13. A98680

Primes of the form 2·n² + 50·n + 23. A217496

Euclid-Mullin sequence (A000945) with initial value a(1)=11 instead of a(1)=2. A51309

Primes with property that when cubed all even digits occur together and all odd digits occur together. A30482

Self-locating numbers within the decimal expansion of log(2): strings k beginning at position k (first digit after decimal point is position 2). A332492

Decimal expansion of the Khinchin harmonic mean K_-1. A87491

a(n) is the smallest initial value (a prime) for the Euclid-Mullin (EM) sequence in which the p=5 prime emerges as n-th term, i.e., arises at the n-th position. A93782