805550000 has 60 divisors (see below), whose sum is σ = 1950937632. Its totient is φ = 322200000.

The previous prime is 805549991. The next prime is 805550027. The reversal of 805550000 is 55508.

It is a happy number.

It is an unprimeable number.

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, 41945 + ... + 58055.

Almost surely, 2^805550000 is an apocalyptic number.

805550000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (975468816).

805550000 is an abundant number, since it is smaller than the sum of its proper divisors (1145387632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805550000 is an equidigital number, since it uses as much as digits as its factorization.

805550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144 (or 16118 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 805550000 is about 28382.2127396720. The cubic root of 805550000 is about 930.4595562791.

The spelling of 805550000 in words is "eight hundred five million, five hundred fifty thousand".