512320385 has 4 divisors (see below), whose sum is σ = 614784468. Its totient is φ = 409856304.

The previous prime is 512320363. The next prime is 512320441. The reversal of 512320385 is 583023215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 263185729 + 249134656 = 16223^2 + 15784^2 .

It is a cyclic number.

It is not a de Polignac number, because 512320385 - 2⁶ = 512320321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51232034 + ... + 51232043.

It is an arithmetic number, because the mean of its divisors is an integer number (153696117).

Almost surely, 2^512320385 is an apocalyptic number.

It is an amenable number.

512320385 is a deficient number, since it is larger than the sum of its proper divisors (102464083).

512320385 is a wasteful number, since it uses less digits than its factorization.

512320385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102464082.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 512320385 is about 22634.4954659917. The cubic root of 512320385 is about 800.1668323938.

The spelling of 512320385 in words is "five hundred twelve million, three hundred twenty thousand, three hundred eighty-five".