2100173 has 2 divisors, whose sum is σ = 2100174. Its totient is φ = 2100172.

The previous prime is 2100167. The next prime is 2100181. The reversal of 2100173 is 3710012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1800964 + 299209 = 1342^2 + 547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050086 + 1050087.

It is an arithmetic number, because the mean of its divisors is an integer number (1050087).

2^2100173 is an apocalyptic number.

It is an amenable number.

2100173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100173 is an equidigital number, since it uses as much as digits as its factorization.

2100173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 2100173 is about 1449.1973640605. The cubic root of 2100173 is about 128.0614329132.

Adding to 2100173 its reverse (3710012), we get a palindrome (5810185).

The spelling of 2100173 in words is "two million, one hundred thousand, one hundred seventy-three".