2564545171 has 2 divisors, whose sum is σ = 2564545172. Its totient is φ = 2564545170.

The previous prime is 2564545157. The next prime is 2564545187. The reversal of 2564545171 is 1715454652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2564545171 - 2⁹ = 2564544659 is a prime.

It is not a weakly prime, because it can be changed into another prime (2564545111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282272585 + 1282272586.

It is an arithmetic number, because the mean of its divisors is an integer number (1282272586).

Almost surely, 2^2564545171 is an apocalyptic number.

2564545171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564545171 is an equidigital number, since it uses as much as digits as its factorization.

2564545171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168000, while the sum is 40.

The square root of 2564545171 is about 50641.3385585334. The cubic root of 2564545171 is about 1368.7898758745.

The spelling of 2564545171 in words is "two billion, five hundred sixty-four million, five hundred forty-five thousand, one hundred seventy-one".