204011155 has 16 divisors (see below), whose sum is σ = 259547904. Its totient is φ = 153671040.

The previous prime is 204011153. The next prime is 204011177. The reversal of 204011155 is 551110402.

204011155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204011155 - 2¹ = 204011153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204011153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12052 + ... + 23521.

It is an arithmetic number, because the mean of its divisors is an integer number (16221744).

Almost surely, 2^204011155 is an apocalyptic number.

204011155 is a deficient number, since it is larger than the sum of its proper divisors (55536749).

204011155 is a wasteful number, since it uses less digits than its factorization.

204011155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35646.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 204011155 is about 14283.2473548560. The cubic root of 204011155 is about 588.6872613730.

Adding to 204011155 its reverse (551110402), we get a palindrome (755121557).

The spelling of 204011155 in words is "two hundred four million, eleven thousand, one hundred fifty-five".