2557465843 has 2 divisors, whose sum is σ = 2557465844. Its totient is φ = 2557465842.

The previous prime is 2557465837. The next prime is 2557465871. The reversal of 2557465843 is 3485647552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2557465843 - 2⁹ = 2557465331 is a prime.

It is a super-2 number, since 2×2557465843² = 13081263076223401298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2557165843) 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, 1278732921 + 1278732922.

It is an arithmetic number, because the mean of its divisors is an integer number (1278732922).

Almost surely, 2^2557465843 is an apocalyptic number.

2557465843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557465843 is an equidigital number, since it uses as much as digits as its factorization.

2557465843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032000, while the sum is 49.

The square root of 2557465843 is about 50571.3935244027. The cubic root of 2557465843 is about 1367.5292179487.

The spelling of 2557465843 in words is "two billion, five hundred fifty-seven million, four hundred sixty-five thousand, eight hundred forty-three".