2556433100 has 72 divisors (see below), whose sum is σ = 6058549728. Its totient is φ = 930585600.

The previous prime is 2556433097. The next prime is 2556433163. The reversal of 2556433100 is 13346552.

It is a super-2 number, since 2×2556433100² = 13070700389551220000, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 78452 + ... + 106148.

It is an arithmetic number, because the mean of its divisors is an integer number (84146524).

Almost surely, 2^2556433100 is an apocalyptic number.

2556433100 is a gapful number since it is divisible by the number (20) 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 2556433100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3029274864).

2556433100 is an abundant number, since it is smaller than the sum of its proper divisors (3502116628).

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

2556433100 is a wasteful number, since it uses less digits than its factorization.

2556433100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27795 (or 27788 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 2556433100 is about 50561.1817504298. The cubic root of 2556433100 is about 1367.3451169075.

Adding to 2556433100 its reverse (13346552), we get a palindrome (2569779652).

The spelling of 2556433100 in words is "two billion, five hundred fifty-six million, four hundred thirty-three thousand, one hundred".