801155 has 4 divisors (see below), whose sum is σ = 961392. Its totient is φ = 640920.

The previous prime is 801137. The next prime is 801179. The reversal of 801155 is 551108.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 801155 - 2¹⁰ = 800131 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80111 + ... + 80120.

It is an arithmetic number, because the mean of its divisors is an integer number (240348).

2⁸⁰¹¹⁵⁵ is an apocalyptic number.

801155 is a deficient number, since it is larger than the sum of its proper divisors (160237).

801155 is a wasteful number, since it uses less digits than its factorization.

801155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160236.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 801155 is about 895.0726227519. The cubic root of 801155 is about 92.8764304820.

Subtracting from 801155 its reverse (551108), we obtain a cube (250047 = 63³).

The spelling of 801155 in words is "eight hundred one thousand, one hundred fifty-five".