Properties of the Number 84181

Eighty-Four Thousand One Hundred Eighty-One

Basics

Value: 84180 → 84181 → 84182

Parity: odd

Prime: Yes

Previous Prime: 84179

Next Prime: 84191

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 84181

Divisors: 1, 84181

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100100011010101

Octal: 244325

Duodecimal: 40871

Hexadecimal: 148d5

Square: 7086440761

Square Root: 290.13962156175774

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 of the form n² + 81. A256775

Primes having only {1, 4, 8} as digits. A260270

Primes in A005891 = Centered pentagonal numbers: (5n² + 5n + 2)/2. A145838

Primes in A284798. A372770

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 64. A31652

a(n) = 2ⁿ+(-2)ⁿ-(-1)ⁿ. A84181