513655530 has 32 divisors (see below), whose sum is σ = 1233964800. Its totient is φ = 136842432.

The previous prime is 513655529. The next prime is 513655577. The reversal of 513655530 is 35556315.

It is a junction number, because it is equal to n+sod(n) for n = 513655491 and 513655500.

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 15 ways as a sum of consecutive naturals, for example, 25551 + ... + 40989.

It is an arithmetic number, because the mean of its divisors is an integer number (38561400).

Almost surely, 2^513655530 is an apocalyptic number.

513655530 is an abundant number, since it is smaller than the sum of its proper divisors (720309270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513655530 is a wasteful number, since it uses less digits than its factorization.

513655530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16558.

The product of its (nonzero) digits is 33750, while the sum is 33.

The square root of 513655530 is about 22663.9698640816. The cubic root of 513655530 is about 800.8613275191.

The spelling of 513655530 in words is "five hundred thirteen million, six hundred fifty-five thousand, five hundred thirty".