Properties of the Number 12521

Twelve Thousand Five Hundred Twenty-One

Basics

Value: 12520 → 12521 → 12522

Parity: odd

Prime: No

Previous Prime: 12517

Next Prime: 12527

Digit Sum: 11

Digital Root: 2

Palindrome: Yes

Factorization: 19 × 659

Divisors: 1, 19, 659, 12521

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11000011101001

Octal: 30351

Duodecimal: 72B5

Hexadecimal: 30e9

Square: 156775441

Square Root: 111.89727431890377

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

Number T(n,k) of set partitions of [n] such that k is the largest element of the last block; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A271466

Numbers divisible by the sum of 4th powers of their digits. A169665

Positive palindromes that are not the sum of two positive palindromes. A213879

Expansion of ∏_k>=1 (1 - x^8*(2·k-1)) * (1 - x^8·k) / (1 - x^k). A280938

Numbers k such that k and its reversal are both multiples of 19. A62907

Number of (w,x,y) with all terms in {0,...,n} and |w-x| + |x-y| > w+x+y. A213482

Odd palindromes in which parity of digits alternates. A30148

Palindromes such that the sum of the digits is prime. A83393

Consider all (2n+1)-digit palindromic primes of the form 30...0M0...03 (so that M is a palindrome with <= 2n-1 digits); a(n) = smallest such M. A100955

Palindromic primes in base 7 (written in base 7). A117702