543540 has 24 divisors (see below), whose sum is σ = 1522080. Its totient is φ = 144928.

The previous prime is 543539. The next prime is 543551. The reversal of 543540 is 45345.

It is a happy number.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4470 + ... + 4589.

It is an arithmetic number, because the mean of its divisors is an integer number (63420).

2⁵⁴³⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

543540 is an abundant number, since it is smaller than the sum of its proper divisors (978540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

543540 is a wasteful number, since it uses less digits than its factorization.

543540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9071 (or 9069 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 543540 is about 737.2516531009. The cubic root of 543540 is about 81.6100862196.

Adding to 543540 its reverse (45345), we get a palindrome (588885).

The spelling of 543540 in words is "five hundred forty-three thousand, five hundred forty".