538321 has 8 divisors (see below), whose sum is σ = 627264. Its totient is φ = 452400.

The previous prime is 538309. The next prime is 538331. The reversal of 538321 is 123835.

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 538321 - 2¹¹ = 536273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 538292 and 538301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538301) 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, 355 + ... + 1096.

It is an arithmetic number, because the mean of its divisors is an integer number (78408).

2⁵³⁸³²¹ is an apocalyptic number.

It is an amenable number.

538321 is a deficient number, since it is larger than the sum of its proper divisors (88943).

538321 is a wasteful number, since it uses less digits than its factorization.

538321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511.

The product of its digits is 720, while the sum is 22.

The square root of 538321 is about 733.7036186363. The cubic root of 538321 is about 81.3480425933.

The spelling of 538321 in words is "five hundred thirty-eight thousand, three hundred twenty-one".