538543321 has 8 divisors (see below), whose sum is σ = 567753984. Its totient is φ = 509815680.

The previous prime is 538543303. The next prime is 538543333. The reversal of 538543321 is 123345835.

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

It is a cyclic number.

It is not a de Polignac number, because 538543321 - 2¹⁹ = 538019033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538543381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118465 + ... + 122926.

It is an arithmetic number, because the mean of its divisors is an integer number (70969248).

Almost surely, 2^538543321 is an apocalyptic number.

It is an amenable number.

538543321 is a deficient number, since it is larger than the sum of its proper divisors (29210663).

538543321 is a wasteful number, since it uses less digits than its factorization.

538543321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241511.

The product of its digits is 43200, while the sum is 34.

The square root of 538543321 is about 23206.5361697949. The cubic root of 538543321 is about 813.5923968517.

It can be divided in two parts, 53854 and 3321, that added together give a palindrome (57175).

The spelling of 538543321 in words is "five hundred thirty-eight million, five hundred forty-three thousand, three hundred twenty-one".