513240016 has 20 divisors (see below), whose sum is σ = 1003528900. Its totient is φ = 254264832.

The previous prime is 513240001. The next prime is 513240071. The reversal of 513240016 is 610042315.

It can be written as a sum of positive squares in 2 ways, for example, as 124992400 + 388247616 = 11180^2 + 19704^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145401 + ... + 148888.

It is an arithmetic number, because the mean of its divisors is an integer number (50176445).

Almost surely, 2^513240016 is an apocalyptic number.

It is an amenable number.

513240016 is a deficient number, since it is larger than the sum of its proper divisors (490288884).

513240016 is a wasteful number, since it uses less digits than its factorization.

513240016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294406 (or 294400 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 513240016 is about 22654.8011688472. The cubic root of 513240016 is about 800.6453209777.

The spelling of 513240016 in words is "five hundred thirteen million, two hundred forty thousand, sixteen".