538717 has 4 divisors (see below), whose sum is σ = 544860. Its totient is φ = 532576.

The previous prime is 538711. The next prime is 538721. The reversal of 538717 is 717835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 717835 = 5 ⋅143567.

It can be written as a sum of positive squares in 2 ways, for example, as 68121 + 470596 = 261^2 + 686^2 .

It is not a de Polignac number, because 538717 - 2³ = 538709 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2938 + ... + 3115.

It is an arithmetic number, because the mean of its divisors is an integer number (136215).

2⁵³⁸⁷¹⁷ is an apocalyptic number.

It is an amenable number.

538717 is a deficient number, since it is larger than the sum of its proper divisors (6143).

538717 is an equidigital number, since it uses as much as digits as its factorization.

538717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6142.

The product of its digits is 5880, while the sum is 31.

The square root of 538717 is about 733.9734327617. The cubic root of 538717 is about 81.3679848019.

The spelling of 538717 in words is "five hundred thirty-eight thousand, seven hundred seventeen".