12517489 has 2 divisors, whose sum is σ = 12517490. Its totient is φ = 12517488.

The previous prime is 12517481. The next prime is 12517493. The reversal of 12517489 is 98471521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 1361889 = 3340^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 12517489 - 2³ = 12517481 is a prime.

It is a super-3 number, since 3×12517489³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12517481) 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 as a sum of consecutive naturals, namely, 6258744 + 6258745.

It is an arithmetic number, because the mean of its divisors is an integer number (6258745).

Almost surely, 2^12517489 is an apocalyptic number.

It is an amenable number.

12517489 is a deficient number, since it is larger than the sum of its proper divisors (1).

12517489 is an equidigital number, since it uses as much as digits as its factorization.

12517489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The square root of 12517489 is about 3538.0063595194. The cubic root of 12517489 is about 232.1876269044.

The spelling of 12517489 in words is "twelve million, five hundred seventeen thousand, four hundred eighty-nine".