543205440 has 280 divisors, whose sum is σ = 2035820160. Its totient is φ = 137106432.

The previous prime is 543205391. The next prime is 543205441. The reversal of 543205440 is 44502345.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (543205441) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 491929 + ... + 493031.

Almost surely, 2^543205440 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 543205440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017910080).

543205440 is an abundant number, since it is smaller than the sum of its proper divisors (1492614720).

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

543205440 is a wasteful number, since it uses less digits than its factorization.

543205440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 543205440 is about 23306.7681157212. The cubic root of 543205440 is about 815.9333855655.

Adding to 543205440 its reverse (44502345), we get a palindrome (587707785).

The spelling of 543205440 in words is "five hundred forty-three million, two hundred five thousand, four hundred forty".