12557572 has 6 divisors (see below), whose sum is σ = 21975758. Its totient is φ = 6278784.

The previous prime is 12557569. The next prime is 12557593. The reversal of 12557572 is 27575521.

It can be written as a sum of positive squares in only one way, i.e., 9339136 + 3218436 = 3056^2 + 1794^2 .

It is a super-2 number, since 2×12557572² = 315385229070368, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1569693 + ... + 1569700.

Almost surely, 2^12557572 is an apocalyptic number.

It is an amenable number.

12557572 is a deficient number, since it is larger than the sum of its proper divisors (9418186).

12557572 is a wasteful number, since it uses less digits than its factorization.

12557572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139397 (or 3139395 counting only the distinct ones).

The product of its digits is 24500, while the sum is 34.

The square root of 12557572 is about 3543.6664628602. Note that the first 3 decimals coincide. The cubic root of 12557572 is about 232.4351968006.

The spelling of 12557572 in words is "twelve million, five hundred fifty-seven thousand, five hundred seventy-two".