538481 has 2 divisors, whose sum is σ = 538482. Its totient is φ = 538480.

The previous prime is 538471. The next prime is 538487. The reversal of 538481 is 184835.

538481 is nontrivially palindromic in base 5.

538481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409600 + 128881 = 640^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 538481 - 2¹⁸ = 276337 is a prime.

It is a super-2 number, since 2×538481² = 579923574722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (538487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269240 + 269241.

It is an arithmetic number, because the mean of its divisors is an integer number (269241).

2⁵³⁸⁴⁸¹ is an apocalyptic number.

It is an amenable number.

538481 is a deficient number, since it is larger than the sum of its proper divisors (1).

538481 is an equidigital number, since it uses as much as digits as its factorization.

538481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 29.

The square root of 538481 is about 733.8126463887. The cubic root of 538481 is about 81.3561012284.

The spelling of 538481 in words is "five hundred thirty-eight thousand, four hundred eighty-one".