538281 has 6 divisors (see below), whose sum is σ = 777530. Its totient is φ = 358848.

The previous prime is 538267. The next prime is 538283. The reversal of 538281 is 182835.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 19881 = 720^2 + 141^2 .

It is not a de Polignac number, because 538281 - 2⁵ = 538249 is a prime.

It is a super-2 number, since 2×538281² = 579492869922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (538283) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29896 + ... + 29913.

2⁵³⁸²⁸¹ is an apocalyptic number.

It is an amenable number.

538281 is a deficient number, since it is larger than the sum of its proper divisors (239249).

538281 is a wasteful number, since it uses less digits than its factorization.

538281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59815 (or 59812 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 538281 is about 733.6763591666. The cubic root of 538281 is about 81.3460276850.

The spelling of 538281 in words is "five hundred thirty-eight thousand, two hundred eighty-one".