Properties of the Number -180181

One Hundred Eighty Thousand One Hundred Eighty-One

Basics

Value: -180182 → -180181 → -180180

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 180181

Divisors: 1, 180181

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011111111010101

Octal: -537725

Duodecimal: -88331

Hexadecimal: -2bfd5

Square: 32465192761

Square Root: 424.4773256606294

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

Primes formed by concatenating n with n+1. A30458

Primes having only {0, 1, 8} as digits. A61247

Primes whose decimal expansion is a concatenation of two or more consecutive increasing numbers (no leading zeros allowed). A52087

Dihedral calculator primes: p, p upside down, p in a mirror, p upside-down-and-in-a-mirror are all primes. A134996

Emirps (A006567) whose difference with the reversal is a perfect square. A217386

Erroneous version of A134996. A38136

Dodecanacci numbers (12th-order Fibonacci sequence): a(n) = a(n-1) +...+ a(n-12) with a(0)=...=a(11)=1. A207539

Smallest number that is centered polygonal in exactly n ways. A63773

Palindromic primes in the sense of A007500 with digits '0', '1' and '8' only. A199328

The greater of twin primes p2 such that 2·p1 + p2 is a prime number (A174913) and also the lesser of other twin primes in A174913. A242773