2105091 has 12 divisors (see below), whose sum is σ = 3062800. Its totient is φ = 1393200.

The previous prime is 2105071. The next prime is 2105111. The reversal of 2105091 is 1905012.

It is an interprime number because it is at equal distance from previous prime (2105071) and next prime (2105111).

It is not a de Polignac number, because 2105091 - 2⁶ = 2105027 is a prime.

It is a Duffinian number.

2105091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2105071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585 + ... + 2133.

2^2105091 is an apocalyptic number.

2105091 is a deficient number, since it is larger than the sum of its proper divisors (957709).

2105091 is a wasteful number, since it uses less digits than its factorization.

2105091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706 (or 1703 counting only the distinct ones).

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

The square root of 2105091 is about 1450.8931731868. The cubic root of 2105091 is about 128.1613159796.

The spelling of 2105091 in words is "two million, one hundred five thousand, ninety-one".