13522513 has 4 divisors (see below), whose sum is σ = 13552308. Its totient is φ = 13492720.

The previous prime is 13522499. The next prime is 13522549. The reversal of 13522513 is 31522531.

13522513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31522531 = 4157 ⋅7583.

It can be written as a sum of positive squares in 2 ways, for example, as 7800849 + 5721664 = 2793^2 + 2392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13522513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13522573) 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, 14206 + ... + 15127.

It is an arithmetic number, because the mean of its divisors is an integer number (3388077).

Almost surely, 2^13522513 is an apocalyptic number.

It is an amenable number.

13522513 is a deficient number, since it is larger than the sum of its proper divisors (29795).

13522513 is an equidigital number, since it uses as much as digits as its factorization.

13522513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29794.

The product of its digits is 900, while the sum is 22.

The square root of 13522513 is about 3677.2969692425. The cubic root of 13522513 is about 238.2424441390.

The spelling of 13522513 in words is "thirteen million, five hundred twenty-two thousand, five hundred thirteen".