805550 has 12 divisors (see below), whose sum is σ = 1498416. Its totient is φ = 322200.

The previous prime is 805537. The next prime is 805559. The reversal of 805550 is 55508.

It is a happy number.

805550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805550.

It is not an unprimeable number, because it can be changed into a prime (805559) by changing a digit.

805550 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8006 + ... + 8105.

It is an arithmetic number, because the mean of its divisors is an integer number (124868).

2⁸⁰⁵⁵⁵⁰ is an apocalyptic number.

805550 is a deficient number, since it is larger than the sum of its proper divisors (692866).

805550 is a wasteful number, since it uses less digits than its factorization.

805550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16123 (or 16118 counting only the distinct ones).

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

The square root of 805550 is about 897.5243729281. The cubic root of 805550 is about 93.0459556279.

The spelling of 805550 in words is "eight hundred five thousand, five hundred fifty".