543540133 has 4 divisors (see below), whose sum is σ = 575513100. Its totient is φ = 511567168.

The previous prime is 543540131. The next prime is 543540161. The reversal of 543540133 is 331045345.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331045345 = 5 ⋅66209069.

It can be written as a sum of positive squares in 2 ways, for example, as 332041284 + 211498849 = 18222^2 + 14543^2 .

It is a cyclic number.

It is not a de Polignac number, because 543540133 - 2¹ = 543540131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543540131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15986458 + ... + 15986491.

It is an arithmetic number, because the mean of its divisors is an integer number (143878275).

Almost surely, 2^543540133 is an apocalyptic number.

It is an amenable number.

543540133 is a deficient number, since it is larger than the sum of its proper divisors (31972967).

543540133 is a wasteful number, since it uses less digits than its factorization.

543540133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31972966.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 543540133 is about 23313.9471776017. The cubic root of 543540133 is about 816.1009287604.

Adding to 543540133 its reverse (331045345), we get a palindrome (874585478).

The spelling of 543540133 in words is "five hundred forty-three million, five hundred forty thousand, one hundred thirty-three".