2801155 has 16 divisors (see below), whose sum is σ = 3873024. Its totient is φ = 1905120.

The previous prime is 2801137. The next prime is 2801179. The reversal of 2801155 is 5511082.

2801155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2801155 - 2⁹ = 2800643 is a prime.

It is a Duffinian number.

2801155 is a modest number, since divided by 1155 gives 280 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5460 + ... + 5950.

It is an arithmetic number, because the mean of its divisors is an integer number (242064).

2^2801155 is an apocalyptic number.

2801155 is a deficient number, since it is larger than the sum of its proper divisors (1071869).

2801155 is a wasteful number, since it uses less digits than its factorization.

2801155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 2801155 is about 1673.6651397457. The cubic root of 2801155 is about 140.9653520487.

The spelling of 2801155 in words is "two million, eight hundred one thousand, one hundred fifty-five".