Properties of the Number 47681

Forty-Seven Thousand Six Hundred Eighty-One

Basics

Value: 47680 → 47681 → 47682

Parity: odd

Prime: Yes

Previous Prime: 47659

Next Prime: 47699

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 47681

Divisors: 1, 47681

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011101001000001

Octal: 135101

Duodecimal: 23715

Hexadecimal: ba41

Square: 2273477761

Square Root: 218.35979483412234

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 p such that continued fraction of (1 + sqrt(p))/2 has period 17 : primes in A146340. A146362

Primes of the form a^a + b^b + c^c + d^d + e^e + f^f. A136294

Primes p such that the left prime neighbors p1, p2 of p as well as the right prime neighbors q1, q2 of p form twin prime pairs and the sum p1 + p2 + p + q1 + q2 is also prime. A138396

a(n) = 3^2·n*(3^2·n-1)*Bernoulli(2·n)/(2·n). A47681