Properties of the Number 7775

Seven Thousand Seven Hundred Seventy-Five

Basics

Value: 7774 → 7775 → 7776

Parity: odd

Prime: No

Previous Prime: 7759

Next Prime: 7789

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 ² × 311

Divisors: 1, 5, 25, 311, 1555, 7775

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111001011111

Octal: 17137

Duodecimal: 45BB

Hexadecimal: 1e5f

Square: 60450625

Square Root: 88.175960442742

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

Coordination sequence for "ubt" 3D uniform tiling. A299291

Generalized 26-gonal (or icosihexagonal) numbers: m*(12·m - 11) with m = 0, +1, -1, +2, -2, +3, -3, ... A316724

Expansion of 1/(1 - x - x⁴ + x⁶). A174522

Heptanacci-Lucas numbers. A104621

Numbers k that divide 6^k-1. A14946

a(n) = 6ⁿ - 1. A24062

Numbers k such that 11·12^k - 1 is prime. A79907

a(n) = 6·n² - 1. A140811

Positive integers n such that 13ⁿ == 7 (mod n). A116632

a(n) = (n+1)ⁿ - 1. A37205