855155 has 16 divisors (see below), whose sum is σ = 1197504. Its totient is φ = 574080.

The previous prime is 855143. The next prime is 855187. The reversal of 855155 is 551558.

855155 = T₁₂₀ + T₁₂₁ + ... + T₁₈₉.

855155 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 855155 - 2⁸ = 854899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1625 + ... + 2085.

It is an arithmetic number, because the mean of its divisors is an integer number (74844).

2⁸⁵⁵¹⁵⁵ is an apocalyptic number.

855155 is a deficient number, since it is larger than the sum of its proper divisors (342349).

855155 is a wasteful number, since it uses less digits than its factorization.

855155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526.

The product of its digits is 5000, while the sum is 29.

The square root of 855155 is about 924.7459110480. The cubic root of 855155 is about 94.9179346688.

The spelling of 855155 in words is "eight hundred fifty-five thousand, one hundred fifty-five".