204106155 has 32 divisors (see below), whose sum is σ = 358490880. Its totient is φ = 98340480.

The previous prime is 204106129. The next prime is 204106169. The reversal of 204106155 is 551601402.

204106155 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 204106155 - 2⁸ = 204105899 is a prime.

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, 23101 + ... + 30689.

It is an arithmetic number, because the mean of its divisors is an integer number (11202840).

Almost surely, 2^204106155 is an apocalyptic number.

204106155 is a deficient number, since it is larger than the sum of its proper divisors (154384725).

204106155 is a wasteful number, since it uses less digits than its factorization.

204106155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7771.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 204106155 is about 14286.5725420760. The cubic root of 204106155 is about 588.7786233892.

Adding to 204106155 its reverse (551601402), we get a palindrome (755707557).

It can be divided in two parts, 20410 and 6155, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 204106155 in words is "two hundred four million, one hundred six thousand, one hundred fifty-five".