204054289 has 2 divisors, whose sum is σ = 204054290. Its totient is φ = 204054288.

The previous prime is 204054287. The next prime is 204054311. The reversal of 204054289 is 982450402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197121600 + 6932689 = 14040^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 204054289 - 2¹ = 204054287 is a prime.

Together with 204054287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (204054287) 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, 102027144 + 102027145.

It is an arithmetic number, because the mean of its divisors is an integer number (102027145).

Almost surely, 2^204054289 is an apocalyptic number.

It is an amenable number.

204054289 is a deficient number, since it is larger than the sum of its proper divisors (1).

204054289 is an equidigital number, since it uses as much as digits as its factorization.

204054289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 204054289 is about 14284.7572257984. The cubic root of 204054289 is about 588.7287470898.

The spelling of 204054289 in words is "two hundred four million, fifty-four thousand, two hundred eighty-nine".