805311155 has 16 divisors (see below), whose sum is σ = 1060128000. Its totient is φ = 582401760.

The previous prime is 805311083. The next prime is 805311163. The reversal of 805311155 is 551113508.

It is not a de Polignac number, because 805311155 - 2¹⁰ = 805310131 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, 31055 + ... + 50744.

It is an arithmetic number, because the mean of its divisors is an integer number (66258000).

Almost surely, 2^805311155 is an apocalyptic number.

805311155 is a deficient number, since it is larger than the sum of its proper divisors (254816845).

805311155 is a wasteful number, since it uses less digits than its factorization.

805311155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81994.

The product of its (nonzero) digits is 3000, while the sum is 29.

The square root of 805311155 is about 28378.0047748252. The cubic root of 805311155 is about 930.3675869908.

The spelling of 805311155 in words is "eight hundred five million, three hundred eleven thousand, one hundred fifty-five".