12915057 has 8 divisors (see below), whose sum is σ = 17413920. Its totient is φ = 8513120.

The previous prime is 12915043. The next prime is 12915059. The reversal of 12915057 is 75051921.

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 12915057 - 2⁷ = 12914929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12915059) 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, 23919 + ... + 24452.

It is an arithmetic number, because the mean of its divisors is an integer number (2176740).

Almost surely, 2^12915057 is an apocalyptic number.

It is an amenable number.

12915057 is a deficient number, since it is larger than the sum of its proper divisors (4498863).

12915057 is an equidigital number, since it uses as much as digits as its factorization.

12915057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48463.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 12915057 is about 3593.7524956513. The cubic root of 12915057 is about 234.6202225561.

Adding to 12915057 its reverse (75051921), we get a palindrome (87966978).

The spelling of 12915057 in words is "twelve million, nine hundred fifteen thousand, fifty-seven".