800055 has 24 divisors (see below), whose sum is σ = 1448928. Its totient is φ = 407616.

The previous prime is 800053. The next prime is 800057. The reversal of 800055 is 550008.

It is an interprime number because it is at equal distance from previous prime (800053) and next prime (800057).

It is not a de Polignac number, because 800055 - 2¹ = 800053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 649 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (60372).

2⁸⁰⁰⁰⁵⁵ is an apocalyptic number.

800055 is a deficient number, since it is larger than the sum of its proper divisors (648873).

800055 is a wasteful number, since it uses less digits than its factorization.

800055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 800055 is about 894.4579364062. The cubic root of 800055 is about 92.8339040184.

Subtracting from 800055 its reverse (550008), we obtain a cube (250047 = 63³).

The spelling of 800055 in words is "eight hundred thousand, fifty-five".