2556345352 has 64 divisors (see below), whose sum is σ = 5547009600. Its totient is φ = 1091543040.

The previous prime is 2556345349. The next prime is 2556345353. The reversal of 2556345352 is 2535436552.

It is not an unprimeable number, because it can be changed into a prime (2556345353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984568 + ... + 987160.

It is an arithmetic number, because the mean of its divisors is an integer number (86672025).

Almost surely, 2^2556345352 is an apocalyptic number.

2556345352 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2556345352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2773504800).

2556345352 is an abundant number, since it is smaller than the sum of its proper divisors (2990664248).

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

2556345352 is a wasteful number, since it uses less digits than its factorization.

2556345352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286 (or 3282 counting only the distinct ones).

The product of its digits is 540000, while the sum is 40.

The square root of 2556345352 is about 50560.3140021895. The cubic root of 2556345352 is about 1367.3294723007.

The spelling of 2556345352 in words is "two billion, five hundred fifty-six million, three hundred forty-five thousand, three hundred fifty-two".