513315532 has 24 divisors (see below), whose sum is σ = 909407520. Its totient is φ = 253497600.

The previous prime is 513315521. The next prime is 513315559. The reversal of 513315532 is 235513315.

It is a self number, because there is not a number n which added to its sum of digits gives 513315532.

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, 195444 + ... + 198052.

It is an arithmetic number, because the mean of its divisors is an integer number (37891980).

Almost surely, 2^513315532 is an apocalyptic number.

It is an amenable number.

513315532 is a deficient number, since it is larger than the sum of its proper divisors (396091988).

513315532 is a wasteful number, since it uses less digits than its factorization.

513315532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201 (or 3199 counting only the distinct ones).

The product of its digits is 6750, while the sum is 28.

The square root of 513315532 is about 22656.4677741258. The cubic root of 513315532 is about 800.6845869255.

Adding to 513315532 its reverse (235513315), we get a palindrome (748828847).

The spelling of 513315532 in words is "five hundred thirteen million, three hundred fifteen thousand, five hundred thirty-two".