550459866 has 16 divisors (see below), whose sum is σ = 1201003488. Its totient is φ = 166806000.

The previous prime is 550459859. The next prime is 550459867. The reversal of 550459866 is 668954055.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (550459867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4170085 + ... + 4170216.

It is an arithmetic number, because the mean of its divisors is an integer number (75062718).

Almost surely, 2^550459866 is an apocalyptic number.

550459866 is an abundant number, since it is smaller than the sum of its proper divisors (650543622).

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

550459866 is a wasteful number, since it uses less digits than its factorization.

550459866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340317.

The product of its (nonzero) digits is 1296000, while the sum is 48.

The square root of 550459866 is about 23461.8811266275. The cubic root of 550459866 is about 819.5495572877.

The spelling of 550459866 in words is "five hundred fifty million, four hundred fifty-nine thousand, eight hundred sixty-six".