513043020 has 72 divisors (see below), whose sum is σ = 1778553504. Its totient is φ = 117266688.

The previous prime is 513043007. The next prime is 513043061. The reversal of 513043020 is 20340315.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 513042984 and 513043002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202329 + ... + 204848.

It is an arithmetic number, because the mean of its divisors is an integer number (24702132).

Almost surely, 2^513043020 is an apocalyptic number.

It is an amenable number.

513043020 is an abundant number, since it is smaller than the sum of its proper divisors (1265510484).

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

513043020 is a wasteful number, since it uses less digits than its factorization.

513043020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407199 (or 407194 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 513043020 is about 22650.4529756029. The cubic root of 513043020 is about 800.5428711137.

Adding to 513043020 its reverse (20340315), we get a palindrome (533383335).

The spelling of 513043020 in words is "five hundred thirteen million, forty-three thousand, twenty".