510985511 has 2 divisors, whose sum is σ = 510985512. Its totient is φ = 510985510.

The previous prime is 510985499. The next prime is 510985513. The reversal of 510985511 is 115589015.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-510985511 is a prime.

It is a super-2 number, since 2×510985511² = 522212384903862242, which contains 22 as substring.

Together with 510985513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (510985513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255492755 + 255492756.

It is an arithmetic number, because the mean of its divisors is an integer number (255492756).

Almost surely, 2^510985511 is an apocalyptic number.

510985511 is a deficient number, since it is larger than the sum of its proper divisors (1).

510985511 is an equidigital number, since it uses as much as digits as its factorization.

510985511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 35.

The square root of 510985511 is about 22604.9886308310. The cubic root of 510985511 is about 799.4712709465.

The spelling of 510985511 in words is "five hundred ten million, nine hundred eighty-five thousand, five hundred eleven".