515020120 has 16 divisors (see below), whose sum is σ = 1158795360. Its totient is φ = 206008032.

The previous prime is 515020111. The next prime is 515020189. The reversal of 515020120 is 21020515.

It is a junction number, because it is equal to n+sod(n) for n = 515020094 and 515020103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6437712 + ... + 6437791.

It is an arithmetic number, because the mean of its divisors is an integer number (72424710).

Almost surely, 2^515020120 is an apocalyptic number.

It is an amenable number.

515020120 is an abundant number, since it is smaller than the sum of its proper divisors (643775240).

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

515020120 is a wasteful number, since it uses less digits than its factorization.

515020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12875514 (or 12875510 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 515020120 is about 22694.0547280560. The cubic root of 515020120 is about 801.5698964330.

Adding to 515020120 its reverse (21020515), we get a palindrome (536040635).

The spelling of 515020120 in words is "five hundred fifteen million, twenty thousand, one hundred twenty".