2565211 has 4 divisors (see below), whose sum is σ = 2798424. Its totient is φ = 2332000.

The previous prime is 2565203. The next prime is 2565221. The reversal of 2565211 is 1125652.

2565211 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.

It is not a de Polignac number, because 2565211 - 2³ = 2565203 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565221) 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, 116590 + ... + 116611.

It is an arithmetic number, because the mean of its divisors is an integer number (699606).

2^2565211 is an apocalyptic number.

2565211 is a deficient number, since it is larger than the sum of its proper divisors (233213).

2565211 is a wasteful number, since it uses less digits than its factorization.

2565211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233212.

The product of its digits is 600, while the sum is 22.

The square root of 2565211 is about 1601.6276096521. The cubic root of 2565211 is about 136.8908324575.

The spelling of 2565211 in words is "two million, five hundred sixty-five thousand, two hundred eleven".