550071820 has 24 divisors (see below), whose sum is σ = 1160964000. Its totient is φ = 218921472.

The previous prime is 550071791. The next prime is 550071853. The reversal of 550071820 is 28170055.

It is a super-2 number, since 2×550071820² = 605158014316224800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65125 + ... + 73084.

It is an arithmetic number, because the mean of its divisors is an integer number (48373500).

Almost surely, 2^550071820 is an apocalyptic number.

It is an amenable number.

550071820 is an abundant number, since it is smaller than the sum of its proper divisors (610892180).

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

550071820 is a wasteful number, since it uses less digits than its factorization.

550071820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138417 (or 138415 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 550071820 is about 23453.6099566783. The cubic root of 550071820 is about 819.3569318688.

The spelling of 550071820 in words is "five hundred fifty million, seventy-one thousand, eight hundred twenty".