204200173 has 2 divisors, whose sum is σ = 204200174. Its totient is φ = 204200172.

The previous prime is 204200159. The next prime is 204200177. The reversal of 204200173 is 371002402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155800324 + 48399849 = 12482^2 + 6957^2 .

It is a cyclic number.

It is not a de Polignac number, because 204200173 - 2⁹ = 204199661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204200173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204200177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102100086 + 102100087.

It is an arithmetic number, because the mean of its divisors is an integer number (102100087).

Almost surely, 2^204200173 is an apocalyptic number.

It is an amenable number.

204200173 is a deficient number, since it is larger than the sum of its proper divisors (1).

204200173 is an equidigital number, since it uses as much as digits as its factorization.

204200173 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 19.

The square root of 204200173 is about 14289.8625955605. The cubic root of 204200173 is about 588.8690131037.

Adding to 204200173 its reverse (371002402), we get a palindrome (575202575).

The spelling of 204200173 in words is "two hundred four million, two hundred thousand, one hundred seventy-three".