Properties of the Number -217205

Two Hundred Seventeen Thousand Two Hundred Five

Basics

Value: -217206 → -217205 → -217204

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 43441

Divisors: 1, 5, 43441, 217205

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110101000001110101

Octal: -650165

Duodecimal: -A5845

Hexadecimal: -35075

Square: 47178012025

Square Root: 466.0525721418132

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

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + 2·b(n-1) - b(n-2) - 1, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences. A294564

Number of words of length n over an infinite alphabet such that all prefixes satisfy c(3·k + 1) >= c(3·k + 2), c(3·k + 1) >= c(3·k), c(3·k + 2) >= c(3·j + 1), and c(3·k) >= c(3·j + 1) for 0 <= k < j, where c(i) is the number of occurrences of the letter i. A392551