205604055 has 32 divisors (see below), whose sum is σ = 378129600. Its totient is φ = 105872256.

The previous prime is 205604033. The next prime is 205604071. The reversal of 205604055 is 550406502.

205604055 is a `hidden beast` number, since 2 + 0 + 5 + 604 + 0 + 55 = 666.

It is not a de Polignac number, because 205604055 - 2⁹ = 205603543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22344 + ... + 30173.

It is an arithmetic number, because the mean of its divisors is an integer number (11816550).

Almost surely, 2^205604055 is an apocalyptic number.

205604055 is a deficient number, since it is larger than the sum of its proper divisors (172525545).

205604055 is a wasteful number, since it uses less digits than its factorization.

205604055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52560 (or 52554 counting only the distinct ones).

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

The square root of 205604055 is about 14338.9000624176. The cubic root of 205604055 is about 590.2154293255.

The spelling of 205604055 in words is "two hundred five million, six hundred four thousand, fifty-five".