Properties of the Number 6481

Six Thousand Four Hundred Eighty-One

Basics

Value: 6480 → 6481 → 6482

Parity: odd

Prime: Yes

Previous Prime: 6473

Next Prime: 6491

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 6481

Divisors: 1, 6481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100101010001

Octal: 14521

Duodecimal: 3901

Hexadecimal: 1951

Square: 42003361

Square Root: 80.50465825031493

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

Primes of the form 1 + n + n² + n³ + ... + n^k, n > 1, k > 1. A85104

Primes of form k² + k + 1. A2383

a(n) = 4·n² - 6·n + 3. A54569

a(n) = prime(n²). A11757

Primes that do not contain any other prime as a proper substring. A33274

Primes congruent to 2 mod 31. A142006

a(n) = ∑_{d∣n, n/d=1 mod 4} d⁴ - ∑_{d∣n, n/d=3 mod 4} d⁴. A50468

Primes which are the concatenation of two squares (in decimal notation). A167535

Expansion of e.g.f.: exp(x * (1 - x)). A293604

Largest prime factor of 3ⁿ + 1. A74476