538081 has 4 divisors (see below), whose sum is σ = 546964. Its totient is φ = 529200.

The previous prime is 538079. The next prime is 538093. The reversal of 538081 is 180835.

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 147456 + 390625 = 384^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 538081 - 2¹ = 538079 is a prime.

It is a super-2 number, since 2×538081² = 579062325122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (538001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4350 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (136741).

2⁵³⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

538081 is a deficient number, since it is larger than the sum of its proper divisors (8883).

538081 is an equidigital number, since it uses as much as digits as its factorization.

538081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8882.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 538081 is about 733.5400466232. The cubic root of 538081 is about 81.3359516461.

The spelling of 538081 in words is "five hundred thirty-eight thousand, eighty-one".