Properties of the Number -78221

Seventy-Eight Thousand Two Hundred Twenty-One

Basics

Value: -78222 → -78221 → -78220

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 13 × 547

Divisors: 1, 11, 13, 143, 547, 6017, 7111, 78221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011000110001101

Octal: -230615

Duodecimal: -39325

Hexadecimal: -1318d

Square: 6118524841

Square Root: 279.6801744850714

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

Residues of the Lucas - Lehmer primality test for M(17) = 131071. A129222

Constant term in the reduction by (x² -> x + 1) of the polynomial p(n,x) defined below at Comments. A192909

Number of zero-sum -n..n arrays of 5 elements with first through fourth differences also in -n..n. A201440