513252020 has 24 divisors (see below), whose sum is σ = 1084973568. Its totient is φ = 203940000.

The previous prime is 513252017. The next prime is 513252031. The reversal of 513252020 is 20252315.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 513251983 and 513252001.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 81956 + ... + 87995.

It is an arithmetic number, because the mean of its divisors is an integer number (45207232).

Almost surely, 2^513252020 is an apocalyptic number.

It is an amenable number.

513252020 is an abundant number, since it is smaller than the sum of its proper divisors (571721548).

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

513252020 is a wasteful number, since it uses less digits than its factorization.

513252020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170111 (or 170109 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 513252020 is about 22655.0661001022. The cubic root of 513252020 is about 800.6515629381.

The spelling of 513252020 in words is "five hundred thirteen million, two hundred fifty-two thousand, twenty".