205043055 has 32 divisors (see below), whose sum is σ = 375642624. Its totient is φ = 93557376.

The previous prime is 205043039. The next prime is 205043063. The reversal of 205043055 is 550340502.

It is not a de Polignac number, because 205043055 - 2⁴ = 205043039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65997 + ... + 69033.

It is an arithmetic number, because the mean of its divisors is an integer number (11738832).

Almost surely, 2^205043055 is an apocalyptic number.

205043055 is a deficient number, since it is larger than the sum of its proper divisors (170599569).

205043055 is a wasteful number, since it uses less digits than its factorization.

205043055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 205043055 is about 14319.3245301585. The cubic root of 205043055 is about 589.6781304811.

Adding to 205043055 its reverse (550340502), we get a palindrome (755383557).

The spelling of 205043055 in words is "two hundred five million, forty-three thousand, fifty-five".