550621216 has 48 divisors (see below), whose sum is σ = 1143495360. Its totient is φ = 260271360.

The previous prime is 550621213. The next prime is 550621223. The reversal of 550621216 is 612126055.

It is not an unprimeable number, because it can be changed into a prime (550621213) 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, 538786 + ... + 539806.

It is an arithmetic number, because the mean of its divisors is an integer number (23822820).

Almost surely, 2^550621216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550621216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571747680).

550621216 is an abundant number, since it is smaller than the sum of its proper divisors (592874144).

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

550621216 is a wasteful number, since it uses less digits than its factorization.

550621216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 550621216 is about 23465.3194310242. The cubic root of 550621216 is about 819.6296245256.

The spelling of 550621216 in words is "five hundred fifty million, six hundred twenty-one thousand, two hundred sixteen".