507785489 has 2 divisors, whose sum is σ = 507785490. Its totient is φ = 507785488.

The previous prime is 507785477. The next prime is 507785491. The reversal of 507785489 is 984587705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470673025 + 37112464 = 21695^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 507785489 - 2⁸ = 507785233 is a prime.

It is a super-2 number, since 2×507785489² = 515692205677938242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 507785491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 507785489.

It is not a weakly prime, because it can be changed into another prime (507785989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253892744 + 253892745.

It is an arithmetic number, because the mean of its divisors is an integer number (253892745).

Almost surely, 2^507785489 is an apocalyptic number.

It is an amenable number.

507785489 is a deficient number, since it is larger than the sum of its proper divisors (1).

507785489 is an equidigital number, since it uses as much as digits as its factorization.

507785489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2822400, while the sum is 53.

The square root of 507785489 is about 22534.0961434001. The cubic root of 507785489 is about 797.7988916442.

The spelling of 507785489 in words is "five hundred seven million, seven hundred eighty-five thousand, four hundred eighty-nine".