543400 has 96 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 172800.

The previous prime is 543383. The next prime is 543407. The reversal of 543400 is 4345.

It is not an unprimeable number, because it can be changed into a prime (543407) by changing a digit.

543400 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 23 ways as a sum of consecutive naturals, for example, 28591 + ... + 28609.

It is an arithmetic number, because the mean of its divisors is an integer number (16275).

2⁵⁴³⁴⁰⁰ is an apocalyptic number.

543400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 543400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781200).

543400 is an abundant number, since it is smaller than the sum of its proper divisors (1019000).

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

543400 is a wasteful number, since it uses less digits than its factorization.

543400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 543400 is about 737.1566997593. The cubic root of 543400 is about 81.6030788278.

Adding to 543400 its reverse (4345), we get a palindrome (547745).

The spelling of 543400 in words is "five hundred forty-three thousand, four hundred".