2565311 has 8 divisors (see below), whose sum is σ = 3033120. Its totient is φ = 2122848.

The previous prime is 2565289. The next prime is 2565319. The reversal of 2565311 is 1135652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2565311 - 2¹⁴ = 2548927 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 (2565319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6116 + ... + 6521.

It is an arithmetic number, because the mean of its divisors is an integer number (379140).

2^2565311 is an apocalyptic number.

2565311 is a deficient number, since it is larger than the sum of its proper divisors (467809).

2565311 is a wasteful number, since it uses less digits than its factorization.

2565311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12673.

The product of its digits is 900, while the sum is 23.

The square root of 2565311 is about 1601.6588275909. The cubic root of 2565311 is about 136.8926112463.

The spelling of 2565311 in words is "two million, five hundred sixty-five thousand, three hundred eleven".