538881 has 16 divisors (see below), whose sum is σ = 835584. Its totient is φ = 302544.

The previous prime is 538877. The next prime is 538921. The reversal of 538881 is 188835.

It is not a de Polignac number, because 538881 - 2² = 538877 is a prime.

It is a super-2 number, since 2×538881² = 580785464322, which contains 22 as substring.

It is a Curzon number.

538881 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 538881.

It is not an unprimeable number, because it can be changed into a prime (538801) 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, 1216 + ... + 1598.

It is an arithmetic number, because the mean of its divisors is an integer number (52224).

2⁵³⁸⁸⁸¹ is an apocalyptic number.

It is an amenable number.

538881 is a deficient number, since it is larger than the sum of its proper divisors (296703).

538881 is a wasteful number, since it uses less digits than its factorization.

538881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460.

The product of its digits is 7680, while the sum is 33.

The square root of 538881 is about 734.0851449253. The cubic root of 538881 is about 81.3762408347.

The spelling of 538881 in words is "five hundred thirty-eight thousand, eight hundred eighty-one".