12933157 has 4 divisors (see below), whose sum is σ = 12941920. Its totient is φ = 12924396.

The previous prime is 12933149. The next prime is 12933161. The reversal of 12933157 is 75133921.

12933157 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12933157 - 2³ = 12933149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12933127) 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, 1563 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (3235480).

Almost surely, 2^12933157 is an apocalyptic number.

It is an amenable number.

12933157 is a deficient number, since it is larger than the sum of its proper divisors (8763).

12933157 is an equidigital number, since it uses as much as digits as its factorization.

12933157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8762.

The product of its digits is 5670, while the sum is 31.

The square root of 12933157 is about 3596.2698730768. The cubic root of 12933157 is about 234.7297754018.

The spelling of 12933157 in words is "twelve million, nine hundred thirty-three thousand, one hundred fifty-seven".