2555502778 has 8 divisors (see below), whose sum is σ = 3839571072. Its totient is φ = 1275645756.

The previous prime is 2555502767. The next prime is 2555502809. The reversal of 2555502778 is 8772055552.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051300 + ... + 1053727.

It is an arithmetic number, because the mean of its divisors is an integer number (479946384).

Almost surely, 2^2555502778 is an apocalyptic number.

2555502778 is a deficient number, since it is larger than the sum of its proper divisors (1284068294).

2555502778 is a wasteful number, since it uses less digits than its factorization.

2555502778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105636.

The product of its (nonzero) digits is 980000, while the sum is 46.

The square root of 2555502778 is about 50551.9809503050. The cubic root of 2555502778 is about 1367.1792314031.

The spelling of 2555502778 in words is "two billion, five hundred fifty-five million, five hundred two thousand, seven hundred seventy-eight".