12513513 has 16 divisors (see below), whose sum is σ = 17810496. Its totient is φ = 7787520.

The previous prime is 12513503. The next prime is 12513517. The reversal of 12513513 is 31531521.

It is not a de Polignac number, because 12513513 - 2⁵ = 12513481 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12513513.

It is not an unprimeable number, because it can be changed into a prime (12513517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5745 + ... + 7617.

It is an arithmetic number, because the mean of its divisors is an integer number (1113156).

Almost surely, 2^12513513 is an apocalyptic number.

It is an amenable number.

12513513 is a deficient number, since it is larger than the sum of its proper divisors (5296983).

12513513 is a wasteful number, since it uses less digits than its factorization.

12513513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024.

The product of its digits is 450, while the sum is 21.

The square root of 12513513 is about 3537.4444165244. Note that the first 4 decimals coincide. The cubic root of 12513513 is about 232.1630406165.

The spelling of 12513513 in words is "twelve million, five hundred thirteen thousand, five hundred thirteen".