12517109 has 4 divisors (see below), whose sum is σ = 13655040. Its totient is φ = 11379180.

The previous prime is 12517103. The next prime is 12517133. The reversal of 12517109 is 90171521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12517109 - 2⁴ = 12517093 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 (12517103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568949 + ... + 568970.

It is an arithmetic number, because the mean of its divisors is an integer number (3413760).

Almost surely, 2^12517109 is an apocalyptic number.

It is an amenable number.

12517109 is a deficient number, since it is larger than the sum of its proper divisors (1137931).

12517109 is a wasteful number, since it uses less digits than its factorization.

12517109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137930.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 12517109 is about 3537.9526565515. The cubic root of 12517109 is about 232.1852773333.

The spelling of 12517109 in words is "twelve million, five hundred seventeen thousand, one hundred nine".