2105522 has 12 divisors (see below), whose sum is σ = 3250170. Its totient is φ = 1022976.

The previous prime is 2105513. The next prime is 2105549. The reversal of 2105522 is 2255012.

It can be written as a sum of positive squares in 3 ways, for example, as 2105401 + 121 = 1451^2 + 11^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2105522.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2354 + ... + 3122.

2^2105522 is an apocalyptic number.

2105522 is a deficient number, since it is larger than the sum of its proper divisors (1144648).

2105522 is an equidigital number, since it uses as much as digits as its factorization.

2105522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2105522 is about 1451.0416947834. The cubic root of 2105522 is about 128.1700620398.

The spelling of 2105522 in words is "two million, one hundred five thousand, five hundred twenty-two".