2556798290 has 16 divisors (see below), whose sum is σ = 4638477312. Its totient is φ = 1014665904.

The previous prime is 2556798287. The next prime is 2556798301. The reversal of 2556798290 is 928976552.

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, 1005344 + ... + 1007883.

It is an arithmetic number, because the mean of its divisors is an integer number (289904832).

Almost surely, 2^2556798290 is an apocalyptic number.

2556798290 is a deficient number, since it is larger than the sum of its proper divisors (2081679022).

2556798290 is a wasteful number, since it uses less digits than its factorization.

2556798290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013361.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The square root of 2556798290 is about 50564.7929887980. The cubic root of 2556798290 is about 1367.4102228538.

The spelling of 2556798290 in words is "two billion, five hundred fifty-six million, seven hundred ninety-eight thousand, two hundred ninety".