2556822808 has 16 divisors (see below), whose sum is σ = 4872634560. Its totient is φ = 1257453600.

The previous prime is 2556822781. The next prime is 2556822809. The reversal of 2556822808 is 8082286552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556822809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2619208 + ... + 2620183.

It is an arithmetic number, because the mean of its divisors is an integer number (304539660).

Almost surely, 2^2556822808 is an apocalyptic number.

It is an amenable number.

2556822808 is a deficient number, since it is larger than the sum of its proper divisors (2315811752).

2556822808 is a wasteful number, since it uses less digits than its factorization.

2556822808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239458 (or 5239454 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 46.

The square root of 2556822808 is about 50565.0354296326. The cubic root of 2556822808 is about 1367.4145936922.

The spelling of 2556822808 in words is "two billion, five hundred fifty-six million, eight hundred twenty-two thousand, eight hundred eight".