Properties of the Number -6181

One Hundred Eighty-One

Basics

Value: -6182 → -6181 → -6180

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 7 × 883

Divisors: 1, 7, 883, 6181

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100000100101

Octal: -14045

Duodecimal: -36B1

Hexadecimal: -1825

Square: 38204761

Square Root: 78.61933604400383

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

Octahedral numbers: a(n) = n*(2·n² + 1)/3. A5900

a(n) = (2·n - 1)*(8·n² - 8·n + 3)/3. A63496

Number of double-free integer partitions of n. A323092

Expansion of (1+x²)/((1-x)²*(1-x²)²). A5993

Number of unlabeled n-edge loop-graphs with at most n vertices such that it is not possible to choose a different vertex from each edge. A368835

Integers of the form c(n)/b(n) where c(n+1)=c(n)+(n+1)⁴ with c(0)=1 and b(n+1)=b(n)+(n+1)² with b(0)=1. A119617

a(n) = 15·n² + 9·n + 1. A134153

Let PG(n) be the graph with one node for each free n-celled polyomino and edges between nodes corresponding to polyominoes that can be obtained from each other by moving one cell, where the intermediate (the set of cells remaining when the cell to be moved is detached) is required to be a (connected) polyomino. a(n) is the number of edges in PG(n). A367435

Numbers k such that the digits of k³ occur with the same frequency. A52047

Numbers k such that k³ is a cube whose digits occur with an equal minimum frequency of 2. A52051