550855866 has 32 divisors (see below), whose sum is σ = 1265126400. Its totient is φ = 158140080.

The previous prime is 550855849. The next prime is 550855873. The reversal of 550855866 is 668558055.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218386 + ... + 220893.

It is an arithmetic number, because the mean of its divisors is an integer number (39535200).

Almost surely, 2^550855866 is an apocalyptic number.

550855866 is an abundant number, since it is smaller than the sum of its proper divisors (714270534).

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

550855866 is a wasteful number, since it uses less digits than its factorization.

550855866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439314.

The product of its (nonzero) digits is 1440000, while the sum is 48.

The square root of 550855866 is about 23470.3188303866. The cubic root of 550855866 is about 819.7460377524.

The spelling of 550855866 in words is "five hundred fifty million, eight hundred fifty-five thousand, eight hundred sixty-six".