543220221 has 8 divisors (see below), whose sum is σ = 724442080. Its totient is φ = 362072592.

The previous prime is 543220123. The next prime is 543220231. The reversal of 543220221 is 122022345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 543220221 - 2¹⁰ = 543219197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543220231) 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, 1671 + ... + 33003.

It is an arithmetic number, because the mean of its divisors is an integer number (90555260).

Almost surely, 2^543220221 is an apocalyptic number.

It is an amenable number.

543220221 is a deficient number, since it is larger than the sum of its proper divisors (181221859).

543220221 is a wasteful number, since it uses less digits than its factorization.

543220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37115.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 543220221 is about 23307.0852102960. The cubic root of 543220221 is about 815.9407862044.

Adding to 543220221 its reverse (122022345), we get a palindrome (665242566).

The spelling of 543220221 in words is "five hundred forty-three million, two hundred twenty thousand, two hundred twenty-one".