12517135 has 4 divisors (see below), whose sum is σ = 15020568. Its totient is φ = 10013704.

The previous prime is 12517133. The next prime is 12517157. The reversal of 12517135 is 53171521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12517135 - 2¹ = 12517133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12517133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251709 + ... + 1251718.

It is an arithmetic number, because the mean of its divisors is an integer number (3755142).

Almost surely, 2^12517135 is an apocalyptic number.

12517135 is a deficient number, since it is larger than the sum of its proper divisors (2503433).

12517135 is an equidigital number, since it uses as much as digits as its factorization.

12517135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503432.

The product of its digits is 1050, while the sum is 25.

The square root of 12517135 is about 3537.9563309911. The cubic root of 12517135 is about 232.1854380950.

Adding to 12517135 its reverse (53171521), we get a palindrome (65688656).

The spelling of 12517135 in words is "twelve million, five hundred seventeen thousand, one hundred thirty-five".