205495056 has 100 divisors (see below), whose sum is σ = 640565772. Its totient is φ = 63224064.

The previous prime is 205495033. The next prime is 205495057. The reversal of 205495056 is 650594502.

205495056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 84934656 + 120560400 = 9216^2 + 10980^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 205495056.

It is not an unprimeable number, because it can be changed into a prime (205495057) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10750 + ... + 22946.

Almost surely, 2^205495056 is an apocalyptic number.

205495056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205495056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320282886).

205495056 is an abundant number, since it is smaller than the sum of its proper divisors (435070716).

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

205495056 is a wasteful number, since it uses less digits than its factorization.

205495056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12230 (or 12215 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 205495056 is about 14335.0987439920. The cubic root of 205495056 is about 590.1111118898. Note that the first 6 decimals are identical.

The spelling of 205495056 in words is "two hundred five million, four hundred ninety-five thousand, fifty-six".