2565947 has 2 divisors, whose sum is σ = 2565948. Its totient is φ = 2565946.

The previous prime is 2565917. The next prime is 2565989. The reversal of 2565947 is 7495652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2565947 - 2¹⁴ = 2549563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2565947.

It is not a weakly prime, because it can be changed into another prime (2565907) 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 as a sum of consecutive naturals, namely, 1282973 + 1282974.

It is an arithmetic number, because the mean of its divisors is an integer number (1282974).

2^2565947 is an apocalyptic number.

2565947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565947 is an equidigital number, since it uses as much as digits as its factorization.

2565947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 2565947 is about 1601.8573594425. The cubic root of 2565947 is about 136.9039232609.

The spelling of 2565947 in words is "two million, five hundred sixty-five thousand, nine hundred forty-seven".