2106173 has 2 divisors, whose sum is σ = 2106174. Its totient is φ = 2106172.

The previous prime is 2106149. The next prime is 2106191. The reversal of 2106173 is 3716012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1909924 + 196249 = 1382^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106173 - 2¹⁰ = 2105149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053086 + 1053087.

It is an arithmetic number, because the mean of its divisors is an integer number (1053087).

2^2106173 is an apocalyptic number.

It is an amenable number.

2106173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106173 is an equidigital number, since it uses as much as digits as its factorization.

2106173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2106173 is about 1451.2659990505. The cubic root of 2106173 is about 128.1832701837.

The spelling of 2106173 in words is "two million, one hundred six thousand, one hundred seventy-three".