2565191 has 2 divisors, whose sum is σ = 2565192. Its totient is φ = 2565190.

The previous prime is 2565161. The next prime is 2565203. The reversal of 2565191 is 1915652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565191 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282595 + 1282596.

It is an arithmetic number, because the mean of its divisors is an integer number (1282596).

2^2565191 is an apocalyptic number.

2565191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565191 is an equidigital number, since it uses as much as digits as its factorization.

2565191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 29.

The square root of 2565191 is about 1601.6213659914. The cubic root of 2565191 is about 136.8904766942.

The spelling of 2565191 in words is "two million, five hundred sixty-five thousand, one hundred ninety-one".