13232591 has 4 divisors (see below), whose sum is σ = 13249992. Its totient is φ = 13215192.

The previous prime is 13232581. The next prime is 13232603. The reversal of 13232591 is 19523231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13232591 is a prime.

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 13232591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13232501) 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, 7505 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (3312498).

Almost surely, 2^13232591 is an apocalyptic number.

13232591 is a deficient number, since it is larger than the sum of its proper divisors (17401).

13232591 is an equidigital number, since it uses as much as digits as its factorization.

13232591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17400.

The product of its digits is 1620, while the sum is 26.

The square root of 13232591 is about 3637.6628485884. The cubic root of 13232591 is about 236.5274936116.

It can be divided in two parts, 132 and 32591, that added together give a palindrome (32723).

The spelling of 13232591 in words is "thirteen million, two hundred thirty-two thousand, five hundred ninety-one".