2565097571 has 2 divisors, whose sum is σ = 2565097572. Its totient is φ = 2565097570.

The previous prime is 2565097559. The next prime is 2565097597. The reversal of 2565097571 is 1757905652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565097571 is a prime.

It is not a weakly prime, because it can be changed into another prime (2565097771) 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, 1282548785 + 1282548786.

It is an arithmetic number, because the mean of its divisors is an integer number (1282548786).

Almost surely, 2^2565097571 is an apocalyptic number.

2565097571 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565097571 is an equidigital number, since it uses as much as digits as its factorization.

2565097571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 661500, while the sum is 47.

The square root of 2565097571 is about 50646.7923071146. The cubic root of 2565097571 is about 1368.8881473930. Note that the first 3 decimals are identical.

The spelling of 2565097571 in words is "two billion, five hundred sixty-five million, ninety-seven thousand, five hundred seventy-one".