13375891 has 4 divisors (see below), whose sum is σ = 13406800. Its totient is φ = 13344984.

The previous prime is 13375883. The next prime is 13375909. The reversal of 13375891 is 19857331.

It is a happy number.

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 13375891 - 2³ = 13375883 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 13375891.

It is not an unprimeable number, because it can be changed into a prime (13375801) 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, 14796 + ... + 15673.

It is an arithmetic number, because the mean of its divisors is an integer number (3351700).

Almost surely, 2^13375891 is an apocalyptic number.

13375891 is a deficient number, since it is larger than the sum of its proper divisors (30909).

13375891 is an equidigital number, since it uses as much as digits as its factorization.

13375891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30908.

The product of its digits is 22680, while the sum is 37.

The square root of 13375891 is about 3657.3065225655. The cubic root of 13375891 is about 237.3782408201.

The spelling of 13375891 in words is "thirteen million, three hundred seventy-five thousand, eight hundred ninety-one".