2775052778 has 4 divisors (see below), whose sum is σ = 4162579170. Its totient is φ = 1387526388.

The previous prime is 2775052759. The next prime is 2775052807. The reversal of 2775052778 is 8772505772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2736649969 + 38402809 = 52313^2 + 6197^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693763193 + ... + 693763196.

Almost surely, 2^2775052778 is an apocalyptic number.

2775052778 is a deficient number, since it is larger than the sum of its proper divisors (1387526392).

2775052778 is a wasteful number, since it uses less digits than its factorization.

2775052778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387526391.

The product of its (nonzero) digits is 1920800, while the sum is 50.

The square root of 2775052778 is about 52678.7697084888. The cubic root of 2775052778 is about 1405.2612876768.

The spelling of 2775052778 in words is "two billion, seven hundred seventy-five million, fifty-two thousand, seven hundred seventy-eight".