13603091 has 4 divisors (see below), whose sum is σ = 13728000. Its totient is φ = 13478184.

The previous prime is 13603067. The next prime is 13603129. The reversal of 13603091 is 19030631.

13603091 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: 19030631 = 1291 ⋅14741.

It is a cyclic number.

It is not a de Polignac number, because 13603091 - 2¹⁸ = 13340947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13603391) 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, 62291 + ... + 62508.

It is an arithmetic number, because the mean of its divisors is an integer number (3432000).

Almost surely, 2^13603091 is an apocalyptic number.

13603091 is a deficient number, since it is larger than the sum of its proper divisors (124909).

13603091 is a wasteful number, since it uses less digits than its factorization.

13603091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124908.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 13603091 is about 3688.2368416359. The cubic root of 13603091 is about 238.7147206262.

The spelling of 13603091 in words is "thirteen million, six hundred three thousand, ninety-one".