13132491 has 4 divisors (see below), whose sum is σ = 17509992. Its totient is φ = 8754992.

The previous prime is 13132489. The next prime is 13132513. The reversal of 13132491 is 19423131.

13132491 is digitally balanced in base 3, 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 13132491 - 2¹ = 13132489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13132291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188746 + ... + 2188751.

It is an arithmetic number, because the mean of its divisors is an integer number (4377498).

Almost surely, 2^13132491 is an apocalyptic number.

13132491 is a deficient number, since it is larger than the sum of its proper divisors (4377501).

13132491 is an equidigital number, since it uses as much as digits as its factorization.

13132491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377500.

The product of its digits is 648, while the sum is 24.

The square root of 13132491 is about 3623.8778952939. The cubic root of 13132491 is about 235.9295669832.

The spelling of 13132491 in words is "thirteen million, one hundred thirty-two thousand, four hundred ninety-one".