205530056 has 16 divisors (see below), whose sum is σ = 386380800. Its totient is φ = 102495184.

The previous prime is 205530043. The next prime is 205530077. The reversal of 205530056 is 650035502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30476 + ... + 36603.

It is an arithmetic number, because the mean of its divisors is an integer number (24148800).

Almost surely, 2^205530056 is an apocalyptic number.

It is an amenable number.

205530056 is a deficient number, since it is larger than the sum of its proper divisors (180850744).

205530056 is a wasteful number, since it uses less digits than its factorization.

205530056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67468 (or 67464 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 205530056 is about 14336.3194718868. The cubic root of 205530056 is about 590.1446126413.

Adding to 205530056 its reverse (650035502), we get a palindrome (855565558).

The spelling of 205530056 in words is "two hundred five million, five hundred thirty thousand, fifty-six".