205164550 has 12 divisors (see below), whose sum is σ = 381606156. Its totient is φ = 82065800.

The previous prime is 205164539. The next prime is 205164559. The reversal of 205164550 is 55461502.

205164550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205164559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2051596 + ... + 2051695.

It is an arithmetic number, because the mean of its divisors is an integer number (31800513).

Almost surely, 2^205164550 is an apocalyptic number.

205164550 is a deficient number, since it is larger than the sum of its proper divisors (176441606).

205164550 is a wasteful number, since it uses less digits than its factorization.

205164550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103303 (or 4103298 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 205164550 is about 14323.5662458761. The cubic root of 205164550 is about 589.7945756163.

The spelling of 205164550 in words is "two hundred five million, one hundred sixty-four thousand, five hundred fifty".