205000056 has 48 divisors (see below), whose sum is σ = 556609560. Its totient is φ = 68160960.

The previous prime is 205000021. The next prime is 205000067. The reversal of 205000056 is 650000502.

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, 26931 + ... + 33693.

Almost surely, 2^205000056 is an apocalyptic number.

It is an amenable number.

205000056 is an abundant number, since it is smaller than the sum of its proper divisors (351609504).

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

205000056 is a wasteful number, since it uses less digits than its factorization.

205000056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196 (or 7189 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 205000056 is about 14317.8230188810. The cubic root of 205000056 is about 589.6369076875.

Adding to 205000056 its reverse (650000502), we get a palindrome (855000558).

The spelling of 205000056 in words is "two hundred five million, fifty-six", and thus it is an aban number.