540523321 has 8 divisors (see below), whose sum is σ = 584253824. Its totient is φ = 497100240.

The previous prime is 540523271. The next prime is 540523337. The reversal of 540523321 is 123325045.

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

It is not a de Polignac number, because 540523321 - 2¹⁷ = 540392249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540523021) 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, 73191 + ... + 80236.

It is an arithmetic number, because the mean of its divisors is an integer number (73031728).

Almost surely, 2^540523321 is an apocalyptic number.

It is an amenable number.

540523321 is a deficient number, since it is larger than the sum of its proper divisors (43730503).

540523321 is a wasteful number, since it uses less digits than its factorization.

540523321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153711.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 540523321 is about 23249.1574255929. The cubic root of 540523321 is about 814.5882577766.

Adding to 540523321 its reverse (123325045), we get a palindrome (663848366).

The spelling of 540523321 in words is "five hundred forty million, five hundred twenty-three thousand, three hundred twenty-one".