205950055 has 12 divisors (see below), whose sum is σ = 250700616. Its totient is φ = 162419600.

The previous prime is 205950047. The next prime is 205950067. The reversal of 205950055 is 550059502.

It is not a de Polignac number, because 205950055 - 2³ = 205950047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205949999 and 205950026.

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 11 ways as a sum of consecutive naturals, for example, 21120 + ... + 29290.

It is an arithmetic number, because the mean of its divisors is an integer number (20891718).

Almost surely, 2^205950055 is an apocalyptic number.

205950055 is a deficient number, since it is larger than the sum of its proper divisors (44750561).

205950055 is an frugal number, since it uses more digits than its factorization.

205950055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8318 (or 8247 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 205950055 is about 14350.9600724133. The cubic root of 205950055 is about 590.5463243747.

The spelling of 205950055 in words is "two hundred five million, nine hundred fifty thousand, fifty-five".