13288591 has 4 divisors (see below), whose sum is σ = 13597672. Its totient is φ = 12979512.

The previous prime is 13288567. The next prime is 13288603. The reversal of 13288591 is 19588231.

13288591 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.

It is a cyclic number.

It is not a de Polignac number, because 13288591 - 2¹⁹ = 12764303 is a prime.

It is a super-3 number, since 3×13288591³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13288591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13088591) 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, 154476 + ... + 154561.

It is an arithmetic number, because the mean of its divisors is an integer number (3399418).

Almost surely, 2^13288591 is an apocalyptic number.

13288591 is a deficient number, since it is larger than the sum of its proper divisors (309081).

13288591 is an equidigital number, since it uses as much as digits as its factorization.

13288591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309080.

The product of its digits is 17280, while the sum is 37.

The square root of 13288591 is about 3645.3519720323. The cubic root of 13288591 is about 236.8606835494.

The spelling of 13288591 in words is "thirteen million, two hundred eighty-eight thousand, five hundred ninety-one".