Properties of the Number 12755

Twelve Thousand Seven Hundred Fifty-Five

Basics

Value: 12754 → 12755 → 12756

Parity: odd

Prime: No

Previous Prime: 12743

Next Prime: 12757

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 2551

Divisors: 1, 5, 2551, 12755

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11000111010011

Octal: 30723

Duodecimal: 746B

Hexadecimal: 31d3

Square: 162690025

Square Root: 112.93803610830145

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

Numbers n such that n!8-2 is prime. A204664

a(n) = a(n-1) + a(floor(n/2)) + a(ceiling(n/2)). A131205

Divide primes in groups with 2n+1 elements and add together. A109725

Number of (w,x,y,z) with all terms in {1,...,n} and w·x+y·z<n². A212111

a(n) = floor(2nd elementary symmetric function of ∑_j=1..k 1/j, k = 1,2,...,n). A25212

Numbers k such that 189·2^k-1 is prime. A50846

Numbers k such that 7·10^k - 9 is prime. A103048

Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A254906

[ exp(13/14)*n! ]. A30916

Total area of all squares with squarefree side length |s - t|, such that n = s + t, and s < t, where s and t are positive integers. A303052