540563 has 4 divisors (see below), whose sum is σ = 543048. Its totient is φ = 538080.

The previous prime is 540559. The next prime is 540577. The reversal of 540563 is 365045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365045 = 5 ⋅73009.

It is a cyclic number.

It is not a de Polignac number, because 540563 - 2² = 540559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881 + ... + 1362.

It is an arithmetic number, because the mean of its divisors is an integer number (135762).

2⁵⁴⁰⁵⁶³ is an apocalyptic number.

540563 is a deficient number, since it is larger than the sum of its proper divisors (2485).

540563 is a wasteful number, since it uses less digits than its factorization.

540563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 540563 is about 735.2298960189. The cubic root of 540563 is about 81.4608189853.

The spelling of 540563 in words is "five hundred forty thousand, five hundred sixty-three".