12357257 has 8 divisors (see below), whose sum is σ = 13521792. Its totient is φ = 11199600.

The previous prime is 12357253. The next prime is 12357269. The reversal of 12357257 is 75275321.

12357257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12357257 - 2² = 12357253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12357253) 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, 2507 + ... + 5567.

It is an arithmetic number, because the mean of its divisors is an integer number (1690224).

Almost surely, 2^12357257 is an apocalyptic number.

It is an amenable number.

12357257 is a deficient number, since it is larger than the sum of its proper divisors (1164535).

12357257 is a wasteful number, since it uses less digits than its factorization.

12357257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439.

The product of its digits is 14700, while the sum is 32.

The square root of 12357257 is about 3515.2890350581. The cubic root of 12357257 is about 231.1926517642.

The spelling of 12357257 in words is "twelve million, three hundred fifty-seven thousand, two hundred fifty-seven".