2551798756 has 24 divisors (see below), whose sum is σ = 5018255424. Its totient is φ = 1126546080.

The previous prime is 2551798747. The next prime is 2551798801. The reversal of 2551798756 is 6578971552.

It is a super-2 number, since 2×2551798756² = 13023353782246295072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2551798697 and 2551798706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065610 + ... + 1068001.

It is an arithmetic number, because the mean of its divisors is an integer number (209093976).

Almost surely, 2^2551798756 is an apocalyptic number.

2551798756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2551798756 is a deficient number, since it is larger than the sum of its proper divisors (2466456668).

2551798756 is a wasteful number, since it uses less digits than its factorization.

2551798756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133651 (or 2133649 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 55.

The square root of 2551798756 is about 50515.3318904271. The cubic root of 2551798756 is about 1366.5183685474.

The spelling of 2551798756 in words is "two billion, five hundred fifty-one million, seven hundred ninety-eight thousand, seven hundred fifty-six".