12507057 has 6 divisors (see below), whose sum is σ = 18065762. Its totient is φ = 8338032.

The previous prime is 12507041. The next prime is 12507059. The reversal of 12507057 is 75070521.

It can be written as a sum of positive squares in only one way, i.e., 8503056 + 4004001 = 2916^2 + 2001^2 .

It is not a de Polignac number, because 12507057 - 2⁴ = 12507041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12507057.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694828 + ... + 694845.

Almost surely, 2^12507057 is an apocalyptic number.

It is an amenable number.

12507057 is a deficient number, since it is larger than the sum of its proper divisors (5558705).

12507057 is a wasteful number, since it uses less digits than its factorization.

12507057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389679 (or 1389676 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 12507057 is about 3536.5317756242. The cubic root of 12507057 is about 232.1231077208.

Adding to 12507057 its reverse (75070521), we get a palindrome (87577578).

The spelling of 12507057 in words is "twelve million, five hundred seven thousand, fifty-seven".