204430573 has 2 divisors, whose sum is σ = 204430574. Its totient is φ = 204430572.

The previous prime is 204430553. The next prime is 204430607. The reversal of 204430573 is 375034402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121947849 + 82482724 = 11043^2 + 9082^2 .

It is a cyclic number.

It is not a de Polignac number, because 204430573 - 2²¹ = 202333421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204430543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102215286 + 102215287.

It is an arithmetic number, because the mean of its divisors is an integer number (102215287).

Almost surely, 2^204430573 is an apocalyptic number.

It is an amenable number.

204430573 is a deficient number, since it is larger than the sum of its proper divisors (1).

204430573 is an equidigital number, since it uses as much as digits as its factorization.

204430573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 204430573 is about 14297.9219818825. The cubic root of 204430573 is about 589.0904044030.

Adding to 204430573 its reverse (375034402), we get a palindrome (579464975).

The spelling of 204430573 in words is "two hundred four million, four hundred thirty thousand, five hundred seventy-three".