543243440 has 160 divisors (see below), whose sum is σ = 1424908800. Its totient is φ = 191600640.

The previous prime is 543243433. The next prime is 543243479. The reversal of 543243440 is 44342345.

It is a super-2 number, since 2×543243440² = 590226870206067200, which contains 22 as substring.

It is an unprimeable number.

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, 1433171 + ... + 1433549.

It is an arithmetic number, because the mean of its divisors is an integer number (8905680).

Almost surely, 2^543243440 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 543243440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712454400).

543243440 is an abundant number, since it is smaller than the sum of its proper divisors (881665360).

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

543243440 is a wasteful number, since it uses less digits than its factorization.

543243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 543243440 is about 23307.5833153075. The cubic root of 543243440 is about 815.9524113603.

Adding to 543243440 its reverse (44342345), we get a palindrome (587585785).

The spelling of 543243440 in words is "five hundred forty-three million, two hundred forty-three thousand, four hundred forty".