550221656 has 32 divisors (see below), whose sum is σ = 1043895600. Its totient is φ = 271870080.

The previous prime is 550221653. The next prime is 550221701. The reversal of 550221656 is 656122055.

550221656 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 not an unprimeable number, because it can be changed into a prime (550221653) 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, 246626 + ... + 248846.

Almost surely, 2^550221656 is an apocalyptic number.

It is an amenable number.

550221656 is a deficient number, since it is larger than the sum of its proper divisors (493673944).

550221656 is a wasteful number, since it uses less digits than its factorization.

550221656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579 (or 2575 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 550221656 is about 23456.8040448822. The cubic root of 550221656 is about 819.4313209548.

The spelling of 550221656 in words is "five hundred fifty million, two hundred twenty-one thousand, six hundred fifty-six".