204560055 has 96 divisors (see below), whose sum is σ = 428688000. Its totient is φ = 90091008.

The previous prime is 204560053. The next prime is 204560063. The reversal of 204560055 is 550065402.

204560055 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 600 + 55 = 666.

It is not a de Polignac number, because 204560055 - 2¹ = 204560053 is a prime.

It is a super-3 number, since 3×204560055³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204560053) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 447387 + ... + 447843.

It is an arithmetic number, because the mean of its divisors is an integer number (4465500).

Almost surely, 2^204560055 is an apocalyptic number.

204560055 is an abundant number, since it is smaller than the sum of its proper divisors (224127945).

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

204560055 is a wasteful number, since it uses less digits than its factorization.

204560055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 204560055 is about 14302.4492657726. The cubic root of 204560055 is about 589.2147506204.

The spelling of 204560055 in words is "two hundred four million, five hundred sixty thousand, fifty-five".