12544521 has 32 divisors (see below), whose sum is σ = 19699200. Its totient is φ = 7015680.

The previous prime is 12544513. The next prime is 12544523.

12544521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12544521 - 2³ = 12544513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12544491 and 12544500.

It is not an unprimeable number, because it can be changed into a prime (12544523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32910 + ... + 33288.

It is an arithmetic number, because the mean of its divisors is an integer number (615600).

Almost surely, 2^12544521 is an apocalyptic number.

12544521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12544521 is a deficient number, since it is larger than the sum of its proper divisors (7154679).

12544521 is a wasteful number, since it uses less digits than its factorization.

12544521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its digits is 1600, while the sum is 24.

The square root of 12544521 is about 3541.8245298151. The cubic root of 12544521 is about 232.3546461107.

It can be divided in two parts, 1254 and 4521, that added together give a palindrome (5775).

The spelling of 12544521 in words is "twelve million, five hundred forty-four thousand, five hundred twenty-one".