12515017 has 4 divisors (see below), whose sum is σ = 12524436. Its totient is φ = 12505600.

The previous prime is 12515003. The next prime is 12515023. The reversal of 12515017 is 71051521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6245001 + 6270016 = 2499^2 + 2504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12515017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12515117) 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, 2308 + ... + 5509.

It is an arithmetic number, because the mean of its divisors is an integer number (3131109).

Almost surely, 2^12515017 is an apocalyptic number.

It is an amenable number.

12515017 is a deficient number, since it is larger than the sum of its proper divisors (9419).

12515017 is an equidigital number, since it uses as much as digits as its factorization.

12515017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9418.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 12515017 is about 3537.6569929828. The cubic root of 12515017 is about 232.1723414746.

Adding to 12515017 its reverse (71051521), we get a palindrome (83566538).

The spelling of 12515017 in words is "twelve million, five hundred fifteen thousand, seventeen".