551622216 has 16 divisors (see below), whose sum is σ = 1379055600. Its totient is φ = 183874064.

The previous prime is 551622167. The next prime is 551622223. The reversal of 551622216 is 612226155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11492106 + ... + 11492153.

It is an arithmetic number, because the mean of its divisors is an integer number (86190975).

Almost surely, 2^551622216 is an apocalyptic number.

It is an amenable number.

551622216 is an abundant number, since it is smaller than the sum of its proper divisors (827433384).

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

551622216 is a wasteful number, since it uses less digits than its factorization.

551622216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22984268 (or 22984264 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 551622216 is about 23486.6390954517. The cubic root of 551622216 is about 820.1260048285.

The spelling of 551622216 in words is "five hundred fifty-one million, six hundred twenty-two thousand, two hundred sixteen".