Properties of the Number 87520

Eighty-Seven Thousand Five Hundred Twenty

Basics

Value: 87519 → 87520 → 87521

Parity: even

Prime: No

Previous Prime: 87517

Next Prime: 87523

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁵ × 5 × 547

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101010111100000

Octal: 252740

Duodecimal: 42794

Hexadecimal: 155e0

Square: 7659750400

Square Root: 295.83779339360956

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

E.g.f. exp(2x)*(Bessel_I(0,2·sqrt(2)x) + Bessel_I(1,2·sqrt(2)x)/sqrt(2)). A119976

Row sums of Riordan triangle A319203. A321204

Number of chordless cycles in the complement of the n X n antelope graph. A370110

Smallest prime p such that the prime signature of p-1 has not occurred earlier. A87520

Number of 4Xn 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. A281607

Number of nX4 0..1 arrays with every element unequal to 1, 2, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero. A316379