538811 has 16 divisors (see below), whose sum is σ = 688128. Its totient is φ = 410400.

The previous prime is 538801. The next prime is 538817. The reversal of 538811 is 118835.

538811 = 98² + 99² + ... + 136².

538811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 538811 - 2¹⁰ = 537787 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 538811.

It is not an unprimeable number, because it can be changed into a prime (538817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2726 + ... + 2916.

It is an arithmetic number, because the mean of its divisors is an integer number (43008).

2⁵³⁸⁸¹¹ is an apocalyptic number.

538811 is a deficient number, since it is larger than the sum of its proper divisors (149317).

538811 is a wasteful number, since it uses less digits than its factorization.

538811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242.

The product of its digits is 960, while the sum is 26.

The square root of 538811 is about 734.0374649839. The cubic root of 538811 is about 81.3727171232.

The spelling of 538811 in words is "five hundred thirty-eight thousand, eight hundred eleven".