2564566573 has 2 divisors, whose sum is σ = 2564566574. Its totient is φ = 2564566572.

The previous prime is 2564566561. The next prime is 2564566579. The reversal of 2564566573 is 3756654652.

2564566573 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 can be written as a sum of positive squares in only one way, i.e., 1419556329 + 1145010244 = 37677^2 + 33838^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564566573 - 2²⁹ = 2027695661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564566579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282283286 + 1282283287.

It is an arithmetic number, because the mean of its divisors is an integer number (1282283287).

Almost surely, 2^2564566573 is an apocalyptic number.

It is an amenable number.

2564566573 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564566573 is an equidigital number, since it uses as much as digits as its factorization.

2564566573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 49.

The square root of 2564566573 is about 50641.5498676729. The cubic root of 2564566573 is about 1368.7936835359.

The spelling of 2564566573 in words is "two billion, five hundred sixty-four million, five hundred sixty-six thousand, five hundred seventy-three".