515061020 has 12 divisors (see below), whose sum is σ = 1081628184. Its totient is φ = 206024400.

The previous prime is 515061007. The next prime is 515061023. The reversal of 515061020 is 20160515.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 25753051 = 515061020 / (5 + 1 + 5 + 0 + 6 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 515060983 and 515061001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515061023) 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, 12876506 + ... + 12876545.

It is an arithmetic number, because the mean of its divisors is an integer number (90135682).

Almost surely, 2^515061020 is an apocalyptic number.

It is an amenable number.

515061020 is an abundant number, since it is smaller than the sum of its proper divisors (566567164).

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

515061020 is a wasteful number, since it uses less digits than its factorization.

515061020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25753060 (or 25753058 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 515061020 is about 22694.9558272317. The cubic root of 515061020 is about 801.5911145949.

The spelling of 515061020 in words is "five hundred fifteen million, sixty-one thousand, twenty".