513660255 has 8 divisors (see below), whose sum is σ = 821856432. Its totient is φ = 273952128.

The previous prime is 513660247. The next prime is 513660289. The reversal of 513660255 is 552066315.

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

It is not a de Polignac number, because 513660255 - 2³ = 513660247 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17121994 + ... + 17122023.

It is an arithmetic number, because the mean of its divisors is an integer number (102732054).

Almost surely, 2^513660255 is an apocalyptic number.

513660255 is a deficient number, since it is larger than the sum of its proper divisors (308196177).

513660255 is a wasteful number, since it uses less digits than its factorization.

513660255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34244025.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 513660255 is about 22664.0741041852. The cubic root of 513660255 is about 800.8637831585.

The spelling of 513660255 in words is "five hundred thirteen million, six hundred sixty thousand, two hundred fifty-five".