513530 has 16 divisors (see below), whose sum is σ = 936360. Its totient is φ = 202752.

The previous prime is 513529. The next prime is 513533. The reversal of 513530 is 35315.

It can be written as a sum of positive squares in 4 ways, for example, as 474721 + 38809 = 689^2 + 197^2 .

It is a junction number, because it is equal to n+sod(n) for n = 513499 and 513508.

It is not an unprimeable number, because it can be changed into a prime (513533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602 + ... + 1178.

2⁵¹³⁵³⁰ is an apocalyptic number.

513530 is a deficient number, since it is larger than the sum of its proper divisors (422830).

513530 is a wasteful number, since it uses less digits than its factorization.

513530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 513530 is about 716.6100752850. The cubic root of 513530 is about 80.0796082553.

Adding to 513530 its reverse (35315), we get a palindrome (548845).

The spelling of 513530 in words is "five hundred thirteen thousand, five hundred thirty".