12517187 has 2 divisors, whose sum is σ = 12517188. Its totient is φ = 12517186.

The previous prime is 12517163. The next prime is 12517199. The reversal of 12517187 is 78171521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12517187 - 2²² = 8322883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12517157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258593 + 6258594.

It is an arithmetic number, because the mean of its divisors is an integer number (6258594).

Almost surely, 2^12517187 is an apocalyptic number.

12517187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12517187 is an equidigital number, since it uses as much as digits as its factorization.

12517187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 32.

The square root of 12517187 is about 3537.9636798588. The cubic root of 12517187 is about 232.1857596176.

The spelling of 12517187 in words is "twelve million, five hundred seventeen thousand, one hundred eighty-seven".