2091105 has 24 divisors (see below), whose sum is σ = 3744000. Its totient is φ = 1078560.

The previous prime is 2091097. The next prime is 2091139. The reversal of 2091105 is 5011902.

It is not a de Polignac number, because 2091105 - 2³ = 2091097 is a prime.

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, 646 + ... + 2144.

It is an arithmetic number, because the mean of its divisors is an integer number (156000).

2^2091105 is an apocalyptic number.

It is an amenable number.

2091105 is a deficient number, since it is larger than the sum of its proper divisors (1652895).

2091105 is a wasteful number, since it uses less digits than its factorization.

2091105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2091105 is about 1446.0653512203. The cubic root of 2091105 is about 127.8768550340.

It can be divided in two parts, 20 and 91105, that added together give a cube (91125 = 45³).

The spelling of 2091105 in words is "two million, ninety-one thousand, one hundred five".