2545431871 has 2 divisors, whose sum is σ = 2545431872. Its totient is φ = 2545431870.

The previous prime is 2545431857. The next prime is 2545431923. The reversal of 2545431871 is 1781345452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2545431871 - 2⁵ = 2545431839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545431821) 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, 1272715935 + 1272715936.

It is an arithmetic number, because the mean of its divisors is an integer number (1272715936).

Almost surely, 2^2545431871 is an apocalyptic number.

2545431871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545431871 is an equidigital number, since it uses as much as digits as its factorization.

2545431871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The square root of 2545431871 is about 50452.2731995299. The cubic root of 2545431871 is about 1365.3809079772.

The spelling of 2545431871 in words is "two billion, five hundred forty-five million, four hundred thirty-one thousand, eight hundred seventy-one".