12907057 has 4 divisors (see below), whose sum is σ = 13083940. Its totient is φ = 12730176.

The previous prime is 12907049. The next prime is 12907073. The reversal of 12907057 is 75070921.

12907057 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.

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 4704561 = 2864^2 + 2169^2 .

It is a cyclic number.

It is not a de Polignac number, because 12907057 - 2³ = 12907049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12907007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88332 + ... + 88477.

It is an arithmetic number, because the mean of its divisors is an integer number (3270985).

Almost surely, 2^12907057 is an apocalyptic number.

It is an amenable number.

12907057 is a deficient number, since it is larger than the sum of its proper divisors (176883).

12907057 is an equidigital number, since it uses as much as digits as its factorization.

12907057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176882.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 12907057 is about 3592.6392805290. The cubic root of 12907057 is about 234.5717687897.

Adding to 12907057 its reverse (75070921), we get a palindrome (87977978).

The spelling of 12907057 in words is "twelve million, nine hundred seven thousand, fifty-seven".