550221216056 has 8 divisors (see below), whose sum is σ = 1031664780120. Its totient is φ = 275110608024.

The previous prime is 550221216053. The next prime is 550221216059. The reversal of 550221216056 is 650612122055.

It is an interprime number because it is at equal distance from previous prime (550221216053) and next prime (550221216059).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550221216053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34388825996 + ... + 34388826011.

It is an arithmetic number, because the mean of its divisors is an integer number (128958097515).

Almost surely, 2^550221216056 is an apocalyptic number.

It is an amenable number.

550221216056 is a deficient number, since it is larger than the sum of its proper divisors (481443564064).

550221216056 is a wasteful number, since it uses less digits than its factorization.

550221216056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68777652013 (or 68777652009 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 550221216056 in words is "five hundred fifty billion, two hundred twenty-one million, two hundred sixteen thousand, fifty-six".