502021369 has 2 divisors, whose sum is σ = 502021370. Its totient is φ = 502021368.

The previous prime is 502021367. The next prime is 502021417. The reversal of 502021369 is 963120205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475806969 + 26214400 = 21813^2 + 5120^2 .

It is a cyclic number.

It is not a de Polignac number, because 502021369 - 2¹ = 502021367 is a prime.

It is a super-2 number, since 2×502021369² = 504050909865268322, which contains 22 as substring.

Together with 502021367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (502021367) 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, 251010684 + 251010685.

It is an arithmetic number, because the mean of its divisors is an integer number (251010685).

Almost surely, 2^502021369 is an apocalyptic number.

It is an amenable number.

502021369 is a deficient number, since it is larger than the sum of its proper divisors (1).

502021369 is an equidigital number, since it uses as much as digits as its factorization.

502021369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 502021369 is about 22405.8333699062. The cubic root of 502021369 is about 794.7686623019.

The spelling of 502021369 in words is "five hundred two million, twenty-one thousand, three hundred sixty-nine".