513503020 has 48 divisors (see below), whose sum is σ = 1172676960. Its totient is φ = 188089344.

The previous prime is 513502999. The next prime is 513503047. The reversal of 513503020 is 20305315.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7830 + ... + 32989.

It is an arithmetic number, because the mean of its divisors is an integer number (24430770).

Almost surely, 2^513503020 is an apocalyptic number.

It is an amenable number.

513503020 is an abundant number, since it is smaller than the sum of its proper divisors (659173940).

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

513503020 is a wasteful number, since it uses less digits than its factorization.

513503020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40882 (or 40880 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 513503020 is about 22660.6050228144. The cubic root of 513503020 is about 800.7820581489.

Adding to 513503020 its reverse (20305315), we get a palindrome (533808335).

The spelling of 513503020 in words is "five hundred thirteen million, five hundred three thousand, twenty".