204492855 has 16 divisors (see below), whose sum is σ = 373929984. Its totient is φ = 93482400.

The previous prime is 204492853. The next prime is 204492857. The reversal of 204492855 is 558294402.

It is an interprime number because it is at equal distance from previous prime (204492853) and next prime (204492857).

It is not a de Polignac number, because 204492855 - 2¹ = 204492853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204492853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973671 + ... + 973880.

It is an arithmetic number, because the mean of its divisors is an integer number (23370624).

Almost surely, 2^204492855 is an apocalyptic number.

204492855 is a deficient number, since it is larger than the sum of its proper divisors (169437129).

204492855 is a wasteful number, since it uses less digits than its factorization.

204492855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947566.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 204492855 is about 14300.0998248264. The cubic root of 204492855 is about 589.1502225973.

The spelling of 204492855 in words is "two hundred four million, four hundred ninety-two thousand, eight hundred fifty-five".