515578980 has 144 divisors (see below), whose sum is σ = 1733792256. Its totient is φ = 114024960.

The previous prime is 515578967. The next prime is 515579021. The reversal of 515578980 is 89875515.

515578980 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88312 + ... + 93968.

It is an arithmetic number, because the mean of its divisors is an integer number (12040224).

Almost surely, 2^515578980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515578980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866896128).

515578980 is an abundant number, since it is smaller than the sum of its proper divisors (1218213276).

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

515578980 is a wasteful number, since it uses less digits than its factorization.

515578980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5714 (or 5705 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 48.

The square root of 515578980 is about 22706.3643060707. The cubic root of 515578980 is about 801.8597255096.

The spelling of 515578980 in words is "five hundred fifteen million, five hundred seventy-eight thousand, nine hundred eighty".