502566139 has 2 divisors, whose sum is σ = 502566140. Its totient is φ = 502566138.

The previous prime is 502566137. The next prime is 502566161. The reversal of 502566139 is 931665205.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 502566139 - 2¹ = 502566137 is a prime.

Together with 502566137, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 502566098 and 502566107.

It is not a weakly prime, because it can be changed into another prime (502566133) 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, 251283069 + 251283070.

It is an arithmetic number, because the mean of its divisors is an integer number (251283070).

Almost surely, 2^502566139 is an apocalyptic number.

502566139 is a deficient number, since it is larger than the sum of its proper divisors (1).

502566139 is an equidigital number, since it uses as much as digits as its factorization.

502566139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 502566139 is about 22417.9869524451. The cubic root of 502566139 is about 795.0560402461.

The spelling of 502566139 in words is "five hundred two million, five hundred sixty-six thousand, one hundred thirty-nine".