Properties of the Number 87825

Eighty-Seven Thousand Eight Hundred Twenty-Five

Basics

Value: 87824 → 87825 → 87826

Parity: odd

Prime: No

Previous Prime: 87811

Next Prime: 87833

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 1171

Divisors: 1, 3, 5, 15, 25, 75, 1171, 3513, 5855, 17565

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101011100010001

Octal: 253421

Duodecimal: 429A9

Hexadecimal: 15711

Square: 7713230625

Square Root: 296.3528302547489

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

Number of potential flows in 3 X 3 array with integer velocities in -n..n, i.e., number of 3 X 3 arrays with adjacent elements differing by no more than n, counting arrays differing by a constant only once. A68744

Number of permutations of length n that avoid the patterns 132, 4321. A116701

a(n) = n*(6·n² + 15·n + 5)/2. A163833

Number of potential flows in n X n array with integer velocities in -2..2, i.e., number of n X n arrays with adjacent elements differing by no more than 2, counting arrays differing by a constant only once. A68749

a(n) = number of times n occurs in A087823. A87825