2105611 has 2 divisors, whose sum is σ = 2105612. Its totient is φ = 2105610.

The previous prime is 2105591. The next prime is 2105641. The reversal of 2105611 is 1165012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105611 - 2⁷ = 2105483 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2105641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052805 + 1052806.

It is an arithmetic number, because the mean of its divisors is an integer number (1052806).

2^2105611 is an apocalyptic number.

2105611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105611 is an equidigital number, since it uses as much as digits as its factorization.

2105611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2105611 is about 1451.0723620826. The cubic root of 2105611 is about 128.1718679221.

The spelling of 2105611 in words is "two million, one hundred five thousand, six hundred eleven".