Properties of the Number 87019

Eighty-Seven Thousand Nineteen

Basics

Value: 87018 → 87019 → 87020

Parity: odd

Prime: No

Previous Prime: 87013

Next Prime: 87037

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 173 × 503

Divisors: 1, 173, 503, 87019

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101001111101011

Octal: 251753

Duodecimal: 42437

Hexadecimal: 153eb

Square: 7572306361

Square Root: 294.98983033318285

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

Lunar squares: n·n where·is lunar multiplication (A087062). A87019

Square array A(n, k) = A048720(A065621(σ((2n-1)²)), σ((2k-1)²)), read by falling antidiagonals, (1,1), (1,2), (2,1), (1,3), (2,2), (3,1), etc. A379221

a(n) = sum of numbers formed using the digits of next n numbers. A81993