Properties of the Number -87811

Eighty-Seven Thousand Eight Hundred Eleven

Basics

Value: -87812 → -87811 → -87810

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 87811

Divisors: 1, 87811

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101011100000011

Octal: -253403

Duodecimal: -42997

Hexadecimal: -15703

Square: 7710771721

Square Root: 296.3292088201904

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 unlabeled rooted trees with n nodes (or connected functions with a fixed point). A81

Number of partitions of n such that 2*(greatest part) > (number of parts). A237754

Number of trivially-perfect graphs on n nodes. A123467

Bisection of A000081 (odd part). A100427

Irregular triangle read by rows: T(n,k), n >= 2, 1 <= k <= n/2, = number of rooted forests with n nodes and k trees, with at least two nodes in each tree. A174135

Primes of the form 4n³ + 3. A199365

First term of strong prime sextets: p(m+1)-p(m) > p(m+2)-p(m+1) > p(m+3)-p(m+2) > p(m+4)-p(m+3) > p(m+5)-p(m+4). A54813

Numbers k such that k and k² use only the digits 0, 1, 2, 7 and 8. A136832

Primes in A000081. A185667

Inverse WEIGH transform of A038000. A38001