2564543431 has 2 divisors, whose sum is σ = 2564543432. Its totient is φ = 2564543430.

The previous prime is 2564543413. The next prime is 2564543477. The reversal of 2564543431 is 1343454652.

Together with previous prime (2564543413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2564543431 - 2¹¹ = 2564541383 is a prime.

It is a super-2 number, since 2×2564543431² = 13153766018970503522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564540431) 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, 1282271715 + 1282271716.

It is an arithmetic number, because the mean of its divisors is an integer number (1282271716).

Almost surely, 2^2564543431 is an apocalyptic number.

2564543431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564543431 is an equidigital number, since it uses as much as digits as its factorization.

2564543431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 37.

The square root of 2564543431 is about 50641.3213788898. The cubic root of 2564543431 is about 1368.7895663076.

The spelling of 2564543431 in words is "two billion, five hundred sixty-four million, five hundred forty-three thousand, four hundred thirty-one".