12521572 has 24 divisors (see below), whose sum is σ = 25136384. Its totient is φ = 5346432.

The previous prime is 12521569. The next prime is 12521573. The reversal of 12521572 is 27512521.

It is not an unprimeable number, because it can be changed into a prime (12521573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8773 + ... + 10099.

Almost surely, 2^12521572 is an apocalyptic number.

It is an amenable number.

12521572 is an abundant number, since it is smaller than the sum of its proper divisors (12614812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12521572 is a wasteful number, since it uses less digits than its factorization.

12521572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675 (or 1673 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 12521572 is about 3538.5833323521. The cubic root of 12521572 is about 232.2128694277.

The spelling of 12521572 in words is "twelve million, five hundred twenty-one thousand, five hundred seventy-two".