543404 has 6 divisors (see below), whose sum is σ = 950964. Its totient is φ = 271700.

The previous prime is 543383. The next prime is 543407. The reversal of 543404 is 404345.

It is a happy number.

It is a pancake number, because a pancake can be divided into 543404 parts by 1042 straight cuts.

It is a plaindrome in base 12.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67922 + ... + 67929.

It is an arithmetic number, because the mean of its divisors is an integer number (158494).

2⁵⁴³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

543404 is a deficient number, since it is larger than the sum of its proper divisors (407560).

543404 is a wasteful number, since it uses less digits than its factorization.

543404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135855 (or 135853 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 543404 is about 737.1594128816. The cubic root of 543404 is about 81.6032790557.

Adding to 543404 its reverse (404345), we get a palindrome (947749).

The spelling of 543404 in words is "five hundred forty-three thousand, four hundred four".