204054559 has 2 divisors, whose sum is σ = 204054560. Its totient is φ = 204054558.

The previous prime is 204054541. The next prime is 204054601. The reversal of 204054559 is 955450402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204054559 - 2⁹ = 204054047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204054359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102027279 + 102027280.

It is an arithmetic number, because the mean of its divisors is an integer number (102027280).

Almost surely, 2^204054559 is an apocalyptic number.

204054559 is a deficient number, since it is larger than the sum of its proper divisors (1).

204054559 is an equidigital number, since it uses as much as digits as its factorization.

204054559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 204054559 is about 14284.7666764284. The cubic root of 204054559 is about 588.7290067538.

It can be divided in two parts, 20405 and 4559, that added together give a square (24964 = 158²).

The spelling of 204054559 in words is "two hundred four million, fifty-four thousand, five hundred fifty-nine".