2800005550 has 12 divisors (see below), whose sum is σ = 5208010416. Its totient is φ = 1120002200.

The previous prime is 2800005541. The next prime is 2800005557. The reversal of 2800005550 is 555000082.

It is a Harshad number since it is a multiple of its sum of digits (25).

2800005550 is a modest number, since divided by 5550 gives 2800 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800005557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28000006 + ... + 28000105.

It is an arithmetic number, because the mean of its divisors is an integer number (434000868).

Almost surely, 2^2800005550 is an apocalyptic number.

2800005550 is a deficient number, since it is larger than the sum of its proper divisors (2408004866).

2800005550 is a wasteful number, since it uses less digits than its factorization.

2800005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56000123 (or 56000118 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2800005550 is about 52915.0786638365. The cubic root of 2800005550 is about 1409.4606776626.

The spelling of 2800005550 in words is "two billion, eight hundred million, five thousand, five hundred fifty".