204565201 has 2 divisors, whose sum is σ = 204565202. Its totient is φ = 204565200.

The previous prime is 204565189. The next prime is 204565211. The reversal of 204565201 is 102565402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198810000 + 5755201 = 14100^2 + 2399^2 .

It is a cyclic number.

It is not a de Polignac number, because 204565201 - 2⁵ = 204565169 is a prime.

It is not a weakly prime, because it can be changed into another prime (204565211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102282600 + 102282601.

It is an arithmetic number, because the mean of its divisors is an integer number (102282601).

Almost surely, 2^204565201 is an apocalyptic number.

It is an amenable number.

204565201 is a deficient number, since it is larger than the sum of its proper divisors (1).

204565201 is an equidigital number, since it uses as much as digits as its factorization.

204565201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 204565201 is about 14302.6291638985. The cubic root of 204565201 is about 589.2196914248.

The spelling of 204565201 in words is "two hundred four million, five hundred sixty-five thousand, two hundred one".