2155110 has 16 divisors (see below), whose sum is σ = 5172336. Its totient is φ = 574688.

The previous prime is 2155103. The next prime is 2155121. The reversal of 2155110 is 115512.

It is a super-2 number, since 2×2155110² = 9288998224200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2155110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35889 + ... + 35948.

It is an arithmetic number, because the mean of its divisors is an integer number (323271).

2^2155110 is an apocalyptic number.

2155110 is an abundant number, since it is smaller than the sum of its proper divisors (3017226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155110 is a wasteful number, since it uses less digits than its factorization.

2155110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71847.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 2155110 is about 1468.0292912609. The cubic root of 2155110 is about 129.1684596814.

The spelling of 2155110 in words is "two million, one hundred fifty-five thousand, one hundred ten".