805444550 has 48 divisors (see below), whose sum is σ = 1565123040. Its totient is φ = 307991040.

The previous prime is 805444537. The next prime is 805444553. The reversal of 805444550 is 55444508.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 805444550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805444553) 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, 146654 + ... + 152046.

It is an arithmetic number, because the mean of its divisors is an integer number (32606730).

Almost surely, 2^805444550 is an apocalyptic number.

805444550 is a deficient number, since it is larger than the sum of its proper divisors (759678490).

805444550 is a wasteful number, since it uses less digits than its factorization.

805444550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537 (or 5532 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The square root of 805444550 is about 28380.3550013033. The cubic root of 805444550 is about 930.4189541059.

The spelling of 805444550 in words is "eight hundred five million, four hundred forty-four thousand, five hundred fifty".