2780005555 has 8 divisors (see below), whose sum is σ = 3398950512. Its totient is φ = 2182041888.

The previous prime is 2780005541. The next prime is 2780005567. The reversal of 2780005555 is 5555000872.

2780005555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2780005555 - 2¹¹ = 2780003507 is a prime.

It is a Duffinian number.

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, 5245029 + ... + 5245558.

It is an arithmetic number, because the mean of its divisors is an integer number (424868814).

Almost surely, 2^2780005555 is an apocalyptic number.

2780005555 is a deficient number, since it is larger than the sum of its proper divisors (618944957).

2780005555 is a wasteful number, since it uses less digits than its factorization.

2780005555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10490645.

The product of its (nonzero) digits is 70000, while the sum is 37.

The square root of 2780005555 is about 52725.7579841201. The cubic root of 2780005555 is about 1406.0968044343.

The spelling of 2780005555 in words is "two billion, seven hundred eighty million, five thousand, five hundred fifty-five".