543344520 has 128 divisors (see below), whose sum is σ = 1727308800. Its totient is φ = 136348416.

The previous prime is 543344453. The next prime is 543344521. The reversal of 543344520 is 25443345.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (543344521) 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 31 ways as a sum of consecutive naturals, for example, 380047 + ... + 381473.

It is an arithmetic number, because the mean of its divisors is an integer number (13494600).

Almost surely, 2^543344520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 543344520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863654400).

543344520 is an abundant number, since it is smaller than the sum of its proper divisors (1183964280).

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

543344520 is a wasteful number, since it uses less digits than its factorization.

543344520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 543344520 is about 23309.7516074282. The cubic root of 543344520 is about 816.0030156559.

Adding to 543344520 its reverse (25443345), we get a palindrome (568787865).

The spelling of 543344520 in words is "five hundred forty-three million, three hundred forty-four thousand, five hundred twenty".