540003 has 4 divisors (see below), whose sum is σ = 720008. Its totient is φ = 360000.

The previous prime is 539993. The next prime is 540041. The reversal of 540003 is 300045.

540003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 540003 - 2¹⁸ = 277859 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540203) 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, 89998 + ... + 90003.

It is an arithmetic number, because the mean of its divisors is an integer number (180002).

2⁵⁴⁰⁰⁰³ is an apocalyptic number.

540003 is a deficient number, since it is larger than the sum of its proper divisors (180005).

540003 is a wasteful number, since it uses less digits than its factorization.

540003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180004.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 540003 is about 734.8489640736. The cubic root of 540003 is about 81.4326792985.

Adding to 540003 its reverse (300045), we get a palindrome (840048).

The spelling of 540003 in words is "five hundred forty thousand, three".