2556455556 has 48 divisors (see below), whose sum is σ = 6029868096. Its totient is φ = 842918784.

The previous prime is 2556455521. The next prime is 2556455569. The reversal of 2556455556 is 6555546552.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1279150 + ... + 1281146.

It is an arithmetic number, because the mean of its divisors is an integer number (125622252).

Almost surely, 2^2556455556 is an apocalyptic number.

It is an amenable number.

2556455556 is an abundant number, since it is smaller than the sum of its proper divisors (3473412540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2556455556 is a wasteful number, since it uses less digits than its factorization.

2556455556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108 (or 3106 counting only the distinct ones).

The product of its digits is 4500000, while the sum is 48.

The square root of 2556455556 is about 50561.4038175366. The cubic root of 2556455556 is about 1367.3491205343.

The spelling of 2556455556 in words is "two billion, five hundred fifty-six million, four hundred fifty-five thousand, five hundred fifty-six".