2806211 has 2 divisors, whose sum is σ = 2806212. Its totient is φ = 2806210.

The previous prime is 2806201. The next prime is 2806231. The reversal of 2806211 is 1126082.

2806211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (2806231) can be obtained adding 2806211 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2806211 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2806201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1403105 + 1403106.

It is an arithmetic number, because the mean of its divisors is an integer number (1403106).

2^2806211 is an apocalyptic number.

2806211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2806211 is an equidigital number, since it uses as much as digits as its factorization.

2806211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2806211 is about 1675.1749162401. The cubic root of 2806211 is about 141.0501138030.

The spelling of 2806211 in words is "two million, eight hundred six thousand, two hundred eleven".