13513603 has 4 divisors (see below), whose sum is σ = 13522528. Its totient is φ = 13504680.

The previous prime is 13513601. The next prime is 13513607. The reversal of 13513603 is 30631531.

13513603 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13513603 - 2¹ = 13513601 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (13513601) 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, 1563 + ... + 5428.

It is an arithmetic number, because the mean of its divisors is an integer number (3380632).

Almost surely, 2^13513603 is an apocalyptic number.

13513603 is a deficient number, since it is larger than the sum of its proper divisors (8925).

13513603 is an equidigital number, since it uses as much as digits as its factorization.

13513603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8924.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 13513603 is about 3676.0852819270. The cubic root of 13513603 is about 238.1901065650.

The spelling of 13513603 in words is "thirteen million, five hundred thirteen thousand, six hundred three".