Properties of the Number 8481

Eight Thousand Four Hundred Eighty-One

Basics

Value: 8480 → 8481 → 8482

Parity: odd

Prime: No

Previous Prime: 8467

Next Prime: 8501

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 11 × 257

Divisors: 1, 3, 11, 33, 257, 771, 2827, 8481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000100100001

Octal: 20441

Duodecimal: 4AA9

Hexadecimal: 2121

Square: 71927361

Square Root: 92.09234495874236

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

Fermat pseudoprimes to base 2, also called Sarrus numbers or Poulet numbers. A1567

Euler pseudoprimes: composite numbers n such that 2^(n-1/2) == +-1 (mod n). A6970

18-gonal (or octadecagonal) numbers: a(n) = n*(8·n-7). A51870

Expansion of 1/(1 - x + x² - x³ - x⁶ - x⁹ + x¹⁰ - x¹¹ + x¹²). A225499

Euler-Jacobi pseudoprimes: 2^(n-1/2) == (2 / n) mod n, where (2 / n) is a Jacobi symbol. A47713

Fermat pseudoprimes to base 4. A20136

Composite numbers k such that k == +-1 (mod 8) and 2^(k-1/2) == 1 (mod k). A6971

Expansion of ∏_m>=1 ((1+q^2·m-1)/(1+q^2·m))³. A29840

Sarrus numbers A001567 that are not Carmichael numbers A002997. A153508

Composite numbers n with the property that φ(n) divides (n-1)². A173703