13275865 has 4 divisors (see below), whose sum is σ = 15931044. Its totient is φ = 10620688.

The previous prime is 13275833. The next prime is 13275869. The reversal of 13275865 is 56857231.

13275865 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, and also an emirpimes, since its reverse is a distinct semiprime: 56857231 = 17 ⋅3344543.

It can be written as a sum of positive squares in 2 ways, for example, as 9259849 + 4016016 = 3043^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 13275865 - 2⁵ = 13275833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13275869) 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, 1327582 + ... + 1327591.

It is an arithmetic number, because the mean of its divisors is an integer number (3982761).

Almost surely, 2^13275865 is an apocalyptic number.

It is an amenable number.

13275865 is a deficient number, since it is larger than the sum of its proper divisors (2655179).

13275865 is an equidigital number, since it uses as much as digits as its factorization.

13275865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655178.

The product of its digits is 50400, while the sum is 37.

The square root of 13275865 is about 3643.6060434685. The cubic root of 13275865 is about 236.7850484476.

The spelling of 13275865 in words is "thirteen million, two hundred seventy-five thousand, eight hundred sixty-five".