204508055 has 4 divisors (see below), whose sum is σ = 245409672. Its totient is φ = 163606440.

The previous prime is 204508009. The next prime is 204508069. The reversal of 204508055 is 550805402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 204508055 - 2¹⁴ = 204491671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 20450801 + ... + 20450810.

It is an arithmetic number, because the mean of its divisors is an integer number (61352418).

Almost surely, 2^204508055 is an apocalyptic number.

204508055 is a deficient number, since it is larger than the sum of its proper divisors (40901617).

204508055 is an equidigital number, since it uses as much as digits as its factorization.

204508055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40901616.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 204508055 is about 14300.6312797722. The cubic root of 204508055 is about 589.1648194586.

The spelling of 204508055 in words is "two hundred four million, five hundred eight thousand, fifty-five".