540539 has 2 divisors, whose sum is σ = 540540. Its totient is φ = 540538.

The previous prime is 540517. The next prime is 540541. The reversal of 540539 is 935045.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 540539 - 2⁸ = 540283 is a prime.

It is a Sophie Germain prime.

Together with 540541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (540509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270269 + 270270.

It is an arithmetic number, because the mean of its divisors is an integer number (270270).

2⁵⁴⁰⁵³⁹ is an apocalyptic number.

540539 is a deficient number, since it is larger than the sum of its proper divisors (1).

540539 is an equidigital number, since it uses as much as digits as its factorization.

540539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 540539 is about 735.2135744122. The cubic root of 540539 is about 81.4596133974.

The spelling of 540539 in words is "five hundred forty thousand, five hundred thirty-nine".