2780222555 has 8 divisors (see below), whose sum is σ = 3639564144. Its totient is φ = 2021980000.

The previous prime is 2780222527. The next prime is 2780222567. The reversal of 2780222555 is 5552220872.

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

It is not a de Polignac number, because 2780222555 - 2¹² = 2780218459 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, 25274696 + ... + 25274805.

It is an arithmetic number, because the mean of its divisors is an integer number (454945518).

Almost surely, 2^2780222555 is an apocalyptic number.

2780222555 is a deficient number, since it is larger than the sum of its proper divisors (859341589).

2780222555 is a wasteful number, since it uses less digits than its factorization.

2780222555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50549517.

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 2780222555 is about 52727.8157617021. The cubic root of 2780222555 is about 1406.1333889017.

The spelling of 2780222555 in words is "two billion, seven hundred eighty million, two hundred twenty-two thousand, five hundred fifty-five".