12557492 has 12 divisors (see below), whose sum is σ = 23268420. Its totient is φ = 5909376.

The previous prime is 12557491. The next prime is 12557549. The reversal of 12557492 is 29475521.

It can be written as a sum of positive squares in 2 ways, for example, as 5973136 + 6584356 = 2444^2 + 2566^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92267 + ... + 92402.

It is an arithmetic number, because the mean of its divisors is an integer number (1939035).

Almost surely, 2^12557492 is an apocalyptic number.

It is an amenable number.

12557492 is a deficient number, since it is larger than the sum of its proper divisors (10710928).

12557492 is a wasteful number, since it uses less digits than its factorization.

12557492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184690 (or 184688 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 12557492 is about 3543.6551750982. The cubic root of 12557492 is about 232.4347032111.

The spelling of 12557492 in words is "twelve million, five hundred fifty-seven thousand, four hundred ninety-two".