12750057 has 24 divisors (see below), whose sum is σ = 19099080. Its totient is φ = 8190720.

The previous prime is 12750011. The next prime is 12750071. The reversal of 12750057 is 75005721.

It can be written as a sum of positive squares in 4 ways, for example, as 47961 + 12702096 = 219^2 + 3564^2 .

It is not a de Polignac number, because 12750057 - 2¹² = 12745961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12750057.

It is not an unprimeable number, because it can be changed into a prime (12750457) 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 23 ways as a sum of consecutive naturals, for example, 40063 + ... + 40379.

It is an arithmetic number, because the mean of its divisors is an integer number (795795).

Almost surely, 2^12750057 is an apocalyptic number.

It is an amenable number.

12750057 is a deficient number, since it is larger than the sum of its proper divisors (6349023).

12750057 is a wasteful number, since it uses less digits than its factorization.

12750057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 470 counting only the distinct ones).

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

The square root of 12750057 is about 3570.7221958590. The cubic root of 12750057 is about 233.6167845515.

Adding to 12750057 its reverse (75005721), we get a palindrome (87755778).

The spelling of 12750057 in words is "twelve million, seven hundred fifty thousand, fifty-seven".