2180173 has 2 divisors, whose sum is σ = 2180174. Its totient is φ = 2180172.

The previous prime is 2180159. The next prime is 2180177. The reversal of 2180173 is 3710812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 338724 = 1357^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 2180173 - 2⁵ = 2180141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2180177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090086 + 1090087.

It is an arithmetic number, because the mean of its divisors is an integer number (1090087).

2^2180173 is an apocalyptic number.

It is an amenable number.

2180173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180173 is an equidigital number, since it uses as much as digits as its factorization.

2180173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 2180173 is about 1476.5408900535. The cubic root of 2180173 is about 129.6672555519.

Adding to 2180173 its reverse (3710812), we get a palindrome (5890985).

The spelling of 2180173 in words is "two million, one hundred eighty thousand, one hundred seventy-three".