2545564331 has 2 divisors, whose sum is σ = 2545564332. Its totient is φ = 2545564330.

The previous prime is 2545564327. The next prime is 2545564337. The reversal of 2545564331 is 1334655452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2545564331 - 2² = 2545564327 is a prime.

It is a super-2 number, since 2×2545564331² = 12959795526518955122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2545564337) 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, 1272782165 + 1272782166.

It is an arithmetic number, because the mean of its divisors is an integer number (1272782166).

Almost surely, 2^2545564331 is an apocalyptic number.

2545564331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545564331 is an equidigital number, since it uses as much as digits as its factorization.

2545564331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 38.

The square root of 2545564331 is about 50453.5859082385. The cubic root of 2545564331 is about 1365.4045916096.

The spelling of 2545564331 in words is "two billion, five hundred forty-five million, five hundred sixty-four thousand, three hundred thirty-one".