204564193 has 2 divisors, whose sum is σ = 204564194. Its totient is φ = 204564192.

The previous prime is 204564181. The next prime is 204564197. The reversal of 204564193 is 391465402.

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., 133448704 + 71115489 = 11552^2 + 8433^2 .

It is a cyclic number.

It is not a de Polignac number, because 204564193 - 2⁵ = 204564161 is a prime.

It is not a weakly prime, because it can be changed into another prime (204564197) 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, 102282096 + 102282097.

It is an arithmetic number, because the mean of its divisors is an integer number (102282097).

Almost surely, 2^204564193 is an apocalyptic number.

It is an amenable number.

204564193 is a deficient number, since it is larger than the sum of its proper divisors (1).

204564193 is an equidigital number, since it uses as much as digits as its factorization.

204564193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 204564193 is about 14302.5939255787. The cubic root of 204564193 is about 589.2187236251.

It can be divided in two parts, 20456 and 4193, that added together give a square (24649 = 157²).

The spelling of 204564193 in words is "two hundred four million, five hundred sixty-four thousand, one hundred ninety-three".