2545564631 has 2 divisors, whose sum is σ = 2545564632. Its totient is φ = 2545564630.

The previous prime is 2545564627. The next prime is 2545564667. The reversal of 2545564631 is 1364655452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2545564631 - 2² = 2545564627 is a prime.

It is a super-2 number, since 2×2545564631² = 12959798581196332322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545564331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272782315 + 1272782316.

It is an arithmetic number, because the mean of its divisors is an integer number (1272782316).

Almost surely, 2^2545564631 is an apocalyptic number.

2545564631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545564631 is an equidigital number, since it uses as much as digits as its factorization.

2545564631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 41.

The square root of 2545564631 is about 50453.5888812679. The cubic root of 2545564631 is about 1365.4046452482.

The spelling of 2545564631 in words is "two billion, five hundred forty-five million, five hundred sixty-four thousand, six hundred thirty-one".