535620523321 has 27 divisors (see below), whose sum is σ = 612330603759. Its totient is φ = 468238812912.

The previous prime is 535620523289. The next prime is 535620523447. The reversal of 535620523321 is 123325026535.

The square root of 535620523321 is 731861.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 79233805225 + 456386718096 = 281485^2 + 675564^2 .

It is not a de Polignac number, because 535620523321 - 2⁵ = 535620523289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (535620023321) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 180768186 + ... + 180771148.

Almost surely, 2^535620523321 is an apocalyptic number.

535620523321 is the 731861-st square number.

535620523321 is the 365931-st centered octagonal number.

It is an amenable number.

535620523321 is a deficient number, since it is larger than the sum of its proper divisors (76710080438).

535620523321 is an frugal number, since it uses more digits than its factorization.

535620523321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990 (or 2995 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 535620523321 its reverse (123325026535), we get a palindrome (658945549856).

The spelling of 535620523321 in words is "five hundred thirty-five billion, six hundred twenty million, five hundred twenty-three thousand, three hundred twenty-one".