12517889 has 2 divisors, whose sum is σ = 12517890. Its totient is φ = 12517888.

The previous prime is 12517873. The next prime is 12517909. The reversal of 12517889 is 98871521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10942864 + 1575025 = 3308^2 + 1255^2 .

It is a cyclic number.

It is not a de Polignac number, because 12517889 - 2⁴ = 12517873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12517829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258944 + 6258945.

It is an arithmetic number, because the mean of its divisors is an integer number (6258945).

Almost surely, 2^12517889 is an apocalyptic number.

It is an amenable number.

12517889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12517889 is an equidigital number, since it uses as much as digits as its factorization.

12517889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 41.

The square root of 12517889 is about 3538.0628880787. The cubic root of 12517889 is about 232.1901000858.

The spelling of 12517889 in words is "twelve million, five hundred seventeen thousand, eight hundred eighty-nine".