550686556 has 12 divisors (see below), whose sum is σ = 1101373168. Its totient is φ = 236008512.

The previous prime is 550686551. The next prime is 550686569. The reversal of 550686556 is 655686055.

550686556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

550686556 is an admirable number.

It is a super-2 number, since 2×550686556² = 606511365918282272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550686551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9833661 + ... + 9833716.

Almost surely, 2^550686556 is an apocalyptic number.

It is an amenable number.

550686556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

550686556 is a wasteful number, since it uses less digits than its factorization.

550686556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19667388 (or 19667386 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The square root of 550686556 is about 23466.7116571538. The cubic root of 550686556 is about 819.6620439577.

The spelling of 550686556 in words is "five hundred fifty million, six hundred eighty-six thousand, five hundred fifty-six".