543523421 has 8 divisors (see below), whose sum is σ = 621927360. Its totient is φ = 465308928.

The previous prime is 543523417. The next prime is 543523433. The reversal of 543523421 is 124325345.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 543523421 - 2² = 543523417 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 (543523021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41156 + ... + 52733.

It is an arithmetic number, because the mean of its divisors is an integer number (77740920).

Almost surely, 2^543523421 is an apocalyptic number.

It is an amenable number.

543523421 is a deficient number, since it is larger than the sum of its proper divisors (78403939).

543523421 is an equidigital number, since it uses as much as digits as its factorization.

543523421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94723.

The product of its digits is 14400, while the sum is 29.

The square root of 543523421 is about 23313.5887627795. The cubic root of 543523421 is about 816.0925645706.

Adding to 543523421 its reverse (124325345), we get a palindrome (667848766).

The spelling of 543523421 in words is "five hundred forty-three million, five hundred twenty-three thousand, four hundred twenty-one".