538885 has 4 divisors (see below), whose sum is σ = 646668. Its totient is φ = 431104.

The previous prime is 538877. The next prime is 538921. The reversal of 538885 is 588835.

538885 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 294849 + 244036 = 543^2 + 494^2 .

It is a cyclic number.

It is not a de Polignac number, because 538885 - 2³ = 538877 is a prime.

It is a Duffinian number.

538885 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53884 + ... + 53893.

It is an arithmetic number, because the mean of its divisors is an integer number (161667).

2⁵³⁸⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

538885 is a deficient number, since it is larger than the sum of its proper divisors (107783).

538885 is a wasteful number, since it uses less digits than its factorization.

538885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107782.

The product of its digits is 38400, while the sum is 37.

The square root of 538885 is about 734.0878693998. The cubic root of 538885 is about 81.3764421804.

The spelling of 538885 in words is "five hundred thirty-eight thousand, eight hundred eighty-five".