12557897 has 8 divisors (see below), whose sum is σ = 13780800. Its totient is φ = 11348560.

The previous prime is 12557891. The next prime is 12557929. The reversal of 12557897 is 79875521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12557897 - 2⁸ = 12557641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12557891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397 + ... + 5202.

It is an arithmetic number, because the mean of its divisors is an integer number (1722600).

Almost surely, 2^12557897 is an apocalyptic number.

It is an amenable number.

12557897 is a deficient number, since it is larger than the sum of its proper divisors (1222903).

12557897 is a wasteful number, since it uses less digits than its factorization.

12557897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6783.

The product of its digits is 176400, while the sum is 44.

The square root of 12557897 is about 3543.7123190237. The cubic root of 12557897 is about 232.4372019862.

The spelling of 12557897 in words is "twelve million, five hundred fifty-seven thousand, eight hundred ninety-seven".