513265730 has 8 divisors (see below), whose sum is σ = 923878332. Its totient is φ = 205306288.

The previous prime is 513265699. The next prime is 513265741. The reversal of 513265730 is 37562315.

It can be written as a sum of positive squares in 2 ways, for example, as 469718929 + 43546801 = 21673^2 + 6599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25663277 + ... + 25663296.

Almost surely, 2^513265730 is an apocalyptic number.

513265730 is a deficient number, since it is larger than the sum of its proper divisors (410612602).

513265730 is a wasteful number, since it uses less digits than its factorization.

513265730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51326580.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 513265730 is about 22655.3686794102. The cubic root of 513265730 is about 800.6586918824.

The spelling of 513265730 in words is "five hundred thirteen million, two hundred sixty-five thousand, seven hundred thirty".