Properties of the Number -5555

Five Hundred Fifty-Five

Basics

Value: -5556 → -5555 → -5554

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: Yes

Factorization: 5 × 11 × 101

Divisors: 1, 5, 11, 55, 101, 505, 1111, 5555

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -1010110110011

Octal: -12663

Duodecimal: -326B

Hexadecimal: -15b3

Square: 30858025

Square Root: 74.53187237685633

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

Values of n such that L(2) and N(2) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A226922

Values of n such that L(16) and N(16) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227519

a(n) = (10^n-1-1) * (n-10) / 9. A91691

Repdigit numbers, or numbers whose digits are all equal. A10785

a(n) = 5*(10ⁿ - 1)/9. A2279

Numbers that are the sum of 4 positive 6th powers. A3360

Numbers m such that there are precisely 7 groups of order m. A249550

Numbers whose decimal expansion contains only 0's and 5's. A169964

Numbers which have only digits 4 and 5 in base 10. A256290

Numbers which have only digits 5 and 6 in base 10. A256291