532740321521 has 4 divisors (see below), whose sum is σ = 532783265700. Its totient is φ = 532697377344.

The previous prime is 532740321497. The next prime is 532740321559. The reversal of 532740321521 is 125123047235.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 251321742400 + 281418579121 = 501320^2 + 530489^2 .

It is a cyclic number.

It is not a de Polignac number, because 532740321521 - 2¹⁴ = 532740305137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (532740327521) 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, 21453476 + ... + 21478293.

It is an arithmetic number, because the mean of its divisors is an integer number (133195816425).

Almost surely, 2^532740321521 is an apocalyptic number.

It is an amenable number.

532740321521 is a deficient number, since it is larger than the sum of its proper divisors (42944179).

532740321521 is a wasteful number, since it uses less digits than its factorization.

532740321521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42944178.

The product of its (nonzero) digits is 50400, while the sum is 35.

Adding to 532740321521 its reverse (125123047235), we get a palindrome (657863368756).

The spelling of 532740321521 in words is "five hundred thirty-two billion, seven hundred forty million, three hundred twenty-one thousand, five hundred twenty-one".