540559 has 2 divisors, whose sum is σ = 540560. Its totient is φ = 540558.

The previous prime is 540557. The next prime is 540577. The reversal of 540559 is 955045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540559 - 2¹ = 540557 is a prime.

Together with 540557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270279 + 270280.

It is an arithmetic number, because the mean of its divisors is an integer number (270280).

2⁵⁴⁰⁵⁵⁹ is an apocalyptic number.

540559 is a deficient number, since it is larger than the sum of its proper divisors (1).

540559 is an equidigital number, since it uses as much as digits as its factorization.

540559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 540559 is about 735.2271757763. The cubic root of 540559 is about 81.4606180565.

The spelling of 540559 in words is "five hundred forty thousand, five hundred fifty-nine".