543423523 has 4 divisors (see below), whose sum is σ = 543557800. Its totient is φ = 543289248.

The previous prime is 543423509. The next prime is 543423557. The reversal of 543423523 is 325324345.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325324345 = 5 ⋅65064869.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543423523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543423623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60873 + ... + 69226.

It is an arithmetic number, because the mean of its divisors is an integer number (135889450).

Almost surely, 2^543423523 is an apocalyptic number.

543423523 is a deficient number, since it is larger than the sum of its proper divisors (134277).

543423523 is a wasteful number, since it uses less digits than its factorization.

543423523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134276.

The product of its digits is 43200, while the sum is 31.

The square root of 543423523 is about 23311.4461799349. The cubic root of 543423523 is about 816.0425630392.

Adding to 543423523 its reverse (325324345), we get a palindrome (868747868).

The spelling of 543423523 in words is "five hundred forty-three million, four hundred twenty-three thousand, five hundred twenty-three".