12557312 has 22 divisors (see below), whose sum is σ = 25104408. Its totient is φ = 6278144.

The previous prime is 12557297. The next prime is 12557317. The reversal of 12557312 is 21375521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557317) 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 as a sum of consecutive naturals, namely, 5108 + ... + 7155.

Almost surely, 2^12557312 is an apocalyptic number.

It is an amenable number.

12557312 is a deficient number, since it is larger than the sum of its proper divisors (12547096).

12557312 is an equidigital number, since it uses as much as digits as its factorization.

12557312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12283 (or 12265 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 12557312 is about 3543.6297775022. The cubic root of 12557312 is about 232.4335926272.

The spelling of 12557312 in words is "twelve million, five hundred fifty-seven thousand, three hundred twelve".