2564510447 has 2 divisors, whose sum is σ = 2564510448. Its totient is φ = 2564510446.

The previous prime is 2564510393. The next prime is 2564510449. The reversal of 2564510447 is 7440154652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2564510447 - 2²⁰ = 2563461871 is a prime.

Together with 2564510449, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2564510447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564510449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282255223 + 1282255224.

It is an arithmetic number, because the mean of its divisors is an integer number (1282255224).

Almost surely, 2^2564510447 is an apocalyptic number.

2564510447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564510447 is an equidigital number, since it uses as much as digits as its factorization.

2564510447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 2564510447 is about 50640.9957149344. The cubic root of 2564510447 is about 1368.7836980312.

The spelling of 2564510447 in words is "two billion, five hundred sixty-four million, five hundred ten thousand, four hundred forty-seven".