510985513 has 2 divisors, whose sum is σ = 510985514. Its totient is φ = 510985512.

The previous prime is 510985511. The next prime is 510985523. The reversal of 510985513 is 315589015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 438190489 + 72795024 = 20933^2 + 8532^2 .

It is a cyclic number.

It is not a de Polignac number, because 510985513 - 2¹ = 510985511 is a prime.

It is a super-2 number, since 2×510985513² = 522212388991746338, which contains 22 as substring.

Together with 510985511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (510985511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255492756 + 255492757.

It is an arithmetic number, because the mean of its divisors is an integer number (255492757).

Almost surely, 2^510985513 is an apocalyptic number.

It is an amenable number.

510985513 is a deficient number, since it is larger than the sum of its proper divisors (1).

510985513 is an equidigital number, since it uses as much as digits as its factorization.

510985513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 37.

The square root of 510985513 is about 22604.9886750690. The cubic root of 510985513 is about 799.4712719895.

The spelling of 510985513 in words is "five hundred ten million, nine hundred eighty-five thousand, five hundred thirteen".