205055445 has 48 divisors (see below), whose sum is σ = 404129088. Its totient is φ = 88220160.

The previous prime is 205055399. The next prime is 205055453. The reversal of 205055445 is 544550502.

It is not a de Polignac number, because 205055445 - 2¹⁴ = 205039061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4290 + ... + 20700.

It is an arithmetic number, because the mean of its divisors is an integer number (8419356).

Almost surely, 2^205055445 is an apocalyptic number.

It is an amenable number.

205055445 is a deficient number, since it is larger than the sum of its proper divisors (199073643).

205055445 is a wasteful number, since it uses less digits than its factorization.

205055445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16450 (or 16443 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 205055445 is about 14319.7571557621. The cubic root of 205055445 is about 589.6900076043.

The spelling of 205055445 in words is "two hundred five million, fifty-five thousand, four hundred forty-five".