551305543220 has 48 divisors (see below), whose sum is σ = 1172878237440. Its totient is φ = 217641350784.

The previous prime is 551305543157. The next prime is 551305543249. The reversal of 551305543220 is 22345503155.

551305543220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3843227 + ... + 3984093.

It is an arithmetic number, because the mean of its divisors is an integer number (24434963280).

Almost surely, 2^551305543220 is an apocalyptic number.

It is an amenable number.

551305543220 is an abundant number, since it is smaller than the sum of its proper divisors (621572694220).

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

551305543220 is a wasteful number, since it uses less digits than its factorization.

551305543220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143432 (or 143430 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 551305543220 in words is "five hundred fifty-one billion, three hundred five million, five hundred forty-three thousand, two hundred twenty".