502039091 has 2 divisors, whose sum is σ = 502039092. Its totient is φ = 502039090.

The previous prime is 502039063. The next prime is 502039093. The reversal of 502039091 is 190930205.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-502039091 is a prime.

Together with 502039093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (502039093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251019545 + 251019546.

It is an arithmetic number, because the mean of its divisors is an integer number (251019546).

Almost surely, 2^502039091 is an apocalyptic number.

502039091 is a deficient number, since it is larger than the sum of its proper divisors (1).

502039091 is an equidigital number, since it uses as much as digits as its factorization.

502039091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 502039091 is about 22406.2288437836. The cubic root of 502039091 is about 794.7780143105.

Adding to 502039091 its reverse (190930205), we get a palindrome (692969296).

The spelling of 502039091 in words is "five hundred two million, thirty-nine thousand, ninety-one".