502561139 has 2 divisors, whose sum is σ = 502561140. Its totient is φ = 502561138.

The previous prime is 502561117. The next prime is 502561219. The reversal of 502561139 is 931165205.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 502561139 - 2²⁴ = 485783923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (502566139) 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, 251280569 + 251280570.

It is an arithmetic number, because the mean of its divisors is an integer number (251280570).

Almost surely, 2^502561139 is an apocalyptic number.

502561139 is a deficient number, since it is larger than the sum of its proper divisors (1).

502561139 is an equidigital number, since it uses as much as digits as its factorization.

502561139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 502561139 is about 22417.8754345723. The cubic root of 502561139 is about 795.0534035826.

The spelling of 502561139 in words is "five hundred two million, five hundred sixty-one thousand, one hundred thirty-nine".