543522 has 16 divisors (see below), whose sum is σ = 1242432. Its totient is φ = 155280.

The previous prime is 543509. The next prime is 543539. The reversal of 543522 is 225345.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 543522.

It is an unprimeable number.

543522 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6429 + ... + 6512.

It is an arithmetic number, because the mean of its divisors is an integer number (77652).

2⁵⁴³⁵²² is an apocalyptic number.

543522 is an abundant number, since it is smaller than the sum of its proper divisors (698910).

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

543522 is a wasteful number, since it uses less digits than its factorization.

543522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12953.

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

The square root of 543522 is about 737.2394454992. The cubic root of 543522 is about 81.6091853366.

Adding to 543522 its reverse (225345), we get a palindrome (768867).

The spelling of 543522 in words is "five hundred forty-three thousand, five hundred twenty-two".