502055312321 has 8 divisors (see below), whose sum is σ = 519408991080. Its totient is φ = 484704395392.

The previous prime is 502055312303. The next prime is 502055312359. The reversal of 502055312321 is 123213550205.

It can be written as a sum of positive squares in 4 ways, for example, as 40708711696 + 461346600625 = 201764^2 + 679225^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 502055312321 - 2¹⁸ = 502055050177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (502055312221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317180 + ... + 1051053.

It is an arithmetic number, because the mean of its divisors is an integer number (64926123885).

Almost surely, 2^502055312321 is an apocalyptic number.

It is an amenable number.

502055312321 is a deficient number, since it is larger than the sum of its proper divisors (17353678759).

502055312321 is a wasteful number, since it uses less digits than its factorization.

502055312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380915.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 502055312321 its reverse (123213550205), we get a palindrome (625268862526).

The spelling of 502055312321 in words is "five hundred two billion, fifty-five million, three hundred twelve thousand, three hundred twenty-one".