2772855 has 24 divisors (see below), whose sum is σ = 4921488. Its totient is φ = 1443456.

The previous prime is 2772839. The next prime is 2772881. The reversal of 2772855 is 5582772.

It is not a de Polignac number, because 2772855 - 2⁴ = 2772839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1219 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (205062).

2^2772855 is an apocalyptic number.

2772855 is a deficient number, since it is larger than the sum of its proper divisors (2148633).

2772855 is a wasteful number, since it uses less digits than its factorization.

2772855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487 (or 1484 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 2772855 is about 1665.1891784419. The cubic root of 2772855 is about 140.4890211488.

The spelling of 2772855 in words is "two million, seven hundred seventy-two thousand, eight hundred fifty-five".