Properties of the Number 8521

Eight Thousand Five Hundred Twenty-One

Basics

Value: 8520 → 8521 → 8522

Parity: odd

Prime: Yes

Previous Prime: 8513

Next Prime: 8527

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 8521

Divisors: 1, 8521

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000101001001

Octal: 20511

Duodecimal: 4B21

Hexadecimal: 2149

Square: 72607441

Square Root: 92.30926280715278

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 from merging of 4 successive digits in decimal expansion of π. A104824

Primes of form n² + 1296. A256834

Primes p for which the period of reciprocal 1/p is (p-1)/12. A56217

Numbers n such that n, n+1 and n+2 are 1,2,3-almost primes. A112998

a(1) = 7; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A74343

Number of phylogenetic plane trees on n labels. A319122

Sum of the fourth largest parts of the partitions of n into 10 squarefree parts. A326634

a(n) = n! * ∑_d∣n (n/d)^d / d!. A354843

Primes with distinct digits in descending order. A52014

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays x(i,j) with row sums sum{j·x(i,j), j=1..k+1} nondecreasing, and column sums sum{i²*x(i,j), i=1..n+1} nondecreasing. A233049