502135321 has 2 divisors, whose sum is σ = 502135322. Its totient is φ = 502135320.

The previous prime is 502135279. The next prime is 502135349. The reversal of 502135321 is 123531205.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296528400 + 205606921 = 17220^2 + 14339^2 .

It is a cyclic number.

It is not a de Polignac number, because 502135321 - 2¹⁵ = 502102553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 502135292 and 502135301.

It is not a weakly prime, because it can be changed into another prime (502133321) 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 as a sum of consecutive naturals, namely, 251067660 + 251067661.

It is an arithmetic number, because the mean of its divisors is an integer number (251067661).

Almost surely, 2^502135321 is an apocalyptic number.

It is an amenable number.

502135321 is a deficient number, since it is larger than the sum of its proper divisors (1).

502135321 is an equidigital number, since it uses as much as digits as its factorization.

502135321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 502135321 is about 22408.3761348296. The cubic root of 502135321 is about 794.8287916328.

Adding to 502135321 its reverse (123531205), we get a palindrome (625666526).

The spelling of 502135321 in words is "five hundred two million, one hundred thirty-five thousand, three hundred twenty-one".