538815 has 16 divisors (see below), whose sum is σ = 913248. Its totient is φ = 270336.

The previous prime is 538801. The next prime is 538817. The reversal of 538815 is 518835.

It is a happy number.

It is not a de Polignac number, because 538815 - 2⁴ = 538799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538817) 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 15 ways as a sum of consecutive naturals, for example, 802 + ... + 1311.

It is an arithmetic number, because the mean of its divisors is an integer number (57078).

2⁵³⁸⁸¹⁵ is an apocalyptic number.

538815 is a deficient number, since it is larger than the sum of its proper divisors (374433).

538815 is a wasteful number, since it uses less digits than its factorization.

538815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138.

The product of its digits is 4800, while the sum is 30.

The square root of 538815 is about 734.0401896354. The cubic root of 538815 is about 81.3729184864.

The spelling of 538815 in words is "five hundred thirty-eight thousand, eight hundred fifteen".