513752465 has 16 divisors (see below), whose sum is σ = 629925888. Its totient is φ = 402143616.

The previous prime is 513752453. The next prime is 513752489. The reversal of 513752465 is 564257315.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 513752465 - 2⁶ = 513752401 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40814 + ... + 51896.

It is an arithmetic number, because the mean of its divisors is an integer number (39370368).

Almost surely, 2^513752465 is an apocalyptic number.

It is an amenable number.

513752465 is a deficient number, since it is larger than the sum of its proper divisors (116173423).

513752465 is a wasteful number, since it uses less digits than its factorization.

513752465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11288.

The product of its digits is 126000, while the sum is 38.

The square root of 513752465 is about 22666.1082896910. The cubic root of 513752465 is about 800.9117027903.

The spelling of 513752465 in words is "five hundred thirteen million, seven hundred fifty-two thousand, four hundred sixty-five".