2804155 has 16 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 2130688.

The previous prime is 2804147. The next prime is 2804171. The reversal of 2804155 is 5514082.

It is not a de Polignac number, because 2804155 - 2³ = 2804147 is a prime.

2804155 is a lucky number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 11919 + ... + 12151.

It is an arithmetic number, because the mean of its divisors is an integer number (221130).

2^2804155 is an apocalyptic number.

2804155 is a deficient number, since it is larger than the sum of its proper divisors (733925).

2804155 is a wasteful number, since it uses less digits than its factorization.

2804155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2804155 is about 1674.5611365370. The cubic root of 2804155 is about 141.0156581038.

The spelling of 2804155 in words is "two million, eight hundred four thousand, one hundred fifty-five".