2813155 has 4 divisors (see below), whose sum is σ = 3375792. Its totient is φ = 2250520.

The previous prime is 2813149. The next prime is 2813171. The reversal of 2813155 is 5513182.

It is a happy number.

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

It is not a de Polignac number, because 2813155 - 2⁵ = 2813123 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 281311 + ... + 281320.

It is an arithmetic number, because the mean of its divisors is an integer number (843948).

2^2813155 is an apocalyptic number.

2813155 is a deficient number, since it is larger than the sum of its proper divisors (562637).

2813155 is an equidigital number, since it uses as much as digits as its factorization.

2813155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562636.

The product of its digits is 1200, while the sum is 25.

The square root of 2813155 is about 1677.2462550264. The cubic root of 2813155 is about 141.1663613234.

The spelling of 2813155 in words is "two million, eight hundred thirteen thousand, one hundred fifty-five".