508065391 has 2 divisors, whose sum is σ = 508065392. Its totient is φ = 508065390.

The previous prime is 508065379. The next prime is 508065403. The reversal of 508065391 is 193560805.

It is a balanced prime because it is at equal distance from previous prime (508065379) and next prime (508065403).

It is a cyclic number.

It is not a de Polignac number, because 508065391 - 2¹⁷ = 507934319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 508065391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (508065361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254032695 + 254032696.

It is an arithmetic number, because the mean of its divisors is an integer number (254032696).

Almost surely, 2^508065391 is an apocalyptic number.

508065391 is a deficient number, since it is larger than the sum of its proper divisors (1).

508065391 is an equidigital number, since it uses as much as digits as its factorization.

508065391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 508065391 is about 22540.3059207279. The cubic root of 508065391 is about 797.9454525396.

The spelling of 508065391 in words is "five hundred eight million, sixty-five thousand, three hundred ninety-one".