808505001 has 12 divisors (see below), whose sum is σ = 1168527360. Its totient is φ = 538686360.

The previous prime is 808504997. The next prime is 808505021. The reversal of 808505001 is 100505808.

808505001 is a `hidden beast` number, since 80 + 85 + 0 + 500 + 1 = 666.

It is not a de Polignac number, because 808505001 - 2² = 808504997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (808505021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9705 + ... + 41366.

It is an arithmetic number, because the mean of its divisors is an integer number (97377280).

Almost surely, 2^808505001 is an apocalyptic number.

It is an amenable number.

808505001 is a deficient number, since it is larger than the sum of its proper divisors (360022359).

808505001 is a wasteful number, since it uses less digits than its factorization.

808505001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52836 (or 52833 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 808505001 is about 28434.2223561679. Note that the first 3 decimals coincide. The cubic root of 808505001 is about 931.5959035963.

The spelling of 808505001 in words is "eight hundred eight million, five hundred five thousand, one".