2555055778 has 8 divisors (see below), whose sum is σ = 4181000400. Its totient is φ = 1161388980.

The previous prime is 2555055751. The next prime is 2555055781. The reversal of 2555055778 is 8775505552.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58069428 + ... + 58069471.

It is an arithmetic number, because the mean of its divisors is an integer number (522625050).

Almost surely, 2^2555055778 is an apocalyptic number.

2555055778 is a deficient number, since it is larger than the sum of its proper divisors (1625944622).

2555055778 is a wasteful number, since it uses less digits than its factorization.

2555055778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116138912.

The product of its (nonzero) digits is 2450000, while the sum is 49.

The square root of 2555055778 is about 50547.5595652253. The cubic root of 2555055778 is about 1367.0995126151.

The spelling of 2555055778 in words is "two billion, five hundred fifty-five million, fifty-five thousand, seven hundred seventy-eight".