543868221 has 8 divisors (see below), whose sum is σ = 780939040. Its totient is φ = 334688112.

The previous prime is 543868211. The next prime is 543868243. The reversal of 543868221 is 122868345.

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

It is not a de Polignac number, because 543868221 - 2⁷ = 543868093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 13945339 = 543868221 / (5 + 4 + 3 + 8 + 6 + 8 + 2 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 543868221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543868201) 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, 6972631 + ... + 6972708.

It is an arithmetic number, because the mean of its divisors is an integer number (97617380).

Almost surely, 2^543868221 is an apocalyptic number.

It is an amenable number.

543868221 is a deficient number, since it is larger than the sum of its proper divisors (237070819).

543868221 is a wasteful number, since it uses less digits than its factorization.

543868221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13945355.

The product of its digits is 92160, while the sum is 39.

The square root of 543868221 is about 23320.9824192721. The cubic root of 543868221 is about 816.2650988313.

The spelling of 543868221 in words is "five hundred forty-three million, eight hundred sixty-eight thousand, two hundred twenty-one".