550090000 has 50 divisors (see below), whose sum is σ = 1331847110. Its totient is φ = 220032000.

The previous prime is 550089997. The next prime is 550090019. The reversal of 550090000 is 90055.

It can be written as a sum of positive squares in 5 ways, for example, as 136048896 + 414041104 = 11664^2 + 20348^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a self number, because there is not a number n which added to its sum of digits gives 550090000.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 17505 + ... + 37504.

Almost surely, 2^550090000 is an apocalyptic number.

550090000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550090000 is an abundant number, since it is smaller than the sum of its proper divisors (781757110).

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

550090000 is an equidigital number, since it uses as much as digits as its factorization.

550090000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55037 (or 55016 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 550090000 is about 23453.9975270741. The cubic root of 550090000 is about 819.3659584143.

Subtracting from 550090000 its reverse (90055), we obtain a palindrome (549999945).

The spelling of 550090000 in words is "five hundred fifty million, ninety thousand".