205020054 has 24 divisors (see below), whose sum is σ = 444494232. Its totient is φ = 68296320.

The previous prime is 205019993. The next prime is 205020061. The reversal of 205020054 is 450020502.

205020054 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38409 + ... + 43419.

It is an arithmetic number, because the mean of its divisors is an integer number (18520593).

Almost surely, 2^205020054 is an apocalyptic number.

205020054 is an abundant number, since it is smaller than the sum of its proper divisors (239474178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205020054 is a wasteful number, since it uses less digits than its factorization.

205020054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7292 (or 7289 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 205020054 is about 14318.5213622078. The cubic root of 205020054 is about 589.6560803254.

Adding to 205020054 its reverse (450020502), we get a palindrome (655040556).

The spelling of 205020054 in words is "two hundred five million, twenty thousand, fifty-four".