513522005 has 8 divisors (see below), whose sum is σ = 616351032. Its totient is φ = 410734528.

The previous prime is 513521971. The next prime is 513522013. The reversal of 513522005 is 500225315.

It can be written as a sum of positive squares in 4 ways, for example, as 19704721 + 493817284 = 4439^2 + 22222^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 513522005 - 2¹² = 513517909 is a prime.

It is a Duffinian 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, 34259 + ... + 46911.

It is an arithmetic number, because the mean of its divisors is an integer number (77043879).

Almost surely, 2^513522005 is an apocalyptic number.

It is an amenable number.

513522005 is a deficient number, since it is larger than the sum of its proper divisors (102829027).

513522005 is a wasteful number, since it uses less digits than its factorization.

513522005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20775.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 513522005 is about 22661.0239177315. The cubic root of 513522005 is about 800.7919267439.

The spelling of 513522005 in words is "five hundred thirteen million, five hundred twenty-two thousand, five".