205204550 has 12 divisors (see below), whose sum is σ = 381680556. Its totient is φ = 82081800.

The previous prime is 205204529. The next prime is 205204577. The reversal of 205204550 is 55402502.

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 5 ways as a sum of consecutive naturals, for example, 2051996 + ... + 2052095.

It is an arithmetic number, because the mean of its divisors is an integer number (31806713).

Almost surely, 2^205204550 is an apocalyptic number.

205204550 is a deficient number, since it is larger than the sum of its proper divisors (176476006).

205204550 is a wasteful number, since it uses less digits than its factorization.

205204550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104103 (or 4104098 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 205204550 is about 14324.9624781359. The cubic root of 205204550 is about 589.8329029817.

The spelling of 205204550 in words is "two hundred five million, two hundred four thousand, five hundred fifty".