513255323 has 4 divisors (see below), whose sum is σ = 586577520. Its totient is φ = 439933128.

The previous prime is 513255299. The next prime is 513255331. The reversal of 513255323 is 323552315.

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

It is a cyclic number.

It is not a de Polignac number, because 513255323 - 2²⁸ = 244819867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513252323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36661088 + ... + 36661101.

It is an arithmetic number, because the mean of its divisors is an integer number (146644380).

Almost surely, 2^513255323 is an apocalyptic number.

513255323 is a deficient number, since it is larger than the sum of its proper divisors (73322197).

513255323 is an equidigital number, since it uses as much as digits as its factorization.

513255323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73322196.

The product of its digits is 13500, while the sum is 29.

The square root of 513255323 is about 22655.1389975873. The cubic root of 513255323 is about 800.6532804481.

The spelling of 513255323 in words is "five hundred thirteen million, two hundred fifty-five thousand, three hundred twenty-three".