13275391 has 4 divisors (see below), whose sum is σ = 13282984. Its totient is φ = 13267800.

The previous prime is 13275389. The next prime is 13275401. The reversal of 13275391 is 19357231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13275391 - 2¹ = 13275389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13275371) 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, 301 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (3320746).

Almost surely, 2^13275391 is an apocalyptic number.

13275391 is a deficient number, since it is larger than the sum of its proper divisors (7593).

13275391 is an equidigital number, since it uses as much as digits as its factorization.

13275391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7592.

The product of its digits is 5670, while the sum is 31.

The square root of 13275391 is about 3643.5409974364. The cubic root of 13275391 is about 236.7822303651.

The spelling of 13275391 in words is "thirteen million, two hundred seventy-five thousand, three hundred ninety-one".