513020020 has 12 divisors (see below), whose sum is σ = 1077342084. Its totient is φ = 205208000.

The previous prime is 513019981. The next prime is 513020029. The reversal of 513020020 is 20020315.

It can be written as a sum of positive squares in 2 ways, for example, as 221771664 + 291248356 = 14892^2 + 17066^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513020029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12825481 + ... + 12825520.

It is an arithmetic number, because the mean of its divisors is an integer number (89778507).

Almost surely, 2^513020020 is an apocalyptic number.

It is an amenable number.

513020020 is an abundant number, since it is smaller than the sum of its proper divisors (564322064).

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

513020020 is a wasteful number, since it uses less digits than its factorization.

513020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25651010 (or 25651008 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 513020020 is about 22649.9452537970. The cubic root of 513020020 is about 800.5309080096.

Adding to 513020020 its reverse (20020315), we get a palindrome (533040335).

The spelling of 513020020 in words is "five hundred thirteen million, twenty thousand, twenty".