2765591 has 2 divisors, whose sum is σ = 2765592. Its totient is φ = 2765590.

The previous prime is 2765579. The next prime is 2765597. The reversal of 2765591 is 1955672.

2765591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2765591 - 2¹⁴ = 2749207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2765597) 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 as a sum of consecutive naturals, namely, 1382795 + 1382796.

It is an arithmetic number, because the mean of its divisors is an integer number (1382796).

2^2765591 is an apocalyptic number.

2765591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2765591 is an equidigital number, since it uses as much as digits as its factorization.

2765591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 2765591 is about 1663.0066145389. The cubic root of 2765591 is about 140.3662349845.

The spelling of 2765591 in words is "two million, seven hundred sixty-five thousand, five hundred ninety-one".