205424055 has 24 divisors (see below), whose sum is σ = 356709600. Its totient is φ = 109362240.

The previous prime is 205424053. The next prime is 205424059. The reversal of 205424055 is 550424502.

It is not a de Polignac number, because 205424055 - 2¹ = 205424053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205424053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23145 + ... + 30765.

It is an arithmetic number, because the mean of its divisors is an integer number (14862900).

Almost surely, 2^205424055 is an apocalyptic number.

205424055 is a deficient number, since it is larger than the sum of its proper divisors (151285545).

205424055 is a wasteful number, since it uses less digits than its factorization.

205424055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8231 (or 8228 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 205424055 is about 14332.6220559952. The cubic root of 205424055 is about 590.0431405781.

Adding to 205424055 its reverse (550424502), we get a palindrome (755848557).

The spelling of 205424055 in words is "two hundred five million, four hundred twenty-four thousand, fifty-five".