52815395520 has 280 divisors, whose sum is σ = 188282384928. Its totient is φ = 14053478400.

The previous prime is 52815395513. The next prime is 52815395599. The reversal of 52815395520 is 2559351825.

It is a happy number.

52815395520 is a `hidden beast` number, since 5 + 28 + 15 + 3 + 95 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13502365 + ... + 13506275.

Almost surely, 2^52815395520 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 52815395520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94141192464).

52815395520 is an abundant number, since it is smaller than the sum of its proper divisors (135466989408).

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

52815395520 is a wasteful number, since it uses less digits than its factorization.

52815395520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 52815395520 in words is "fifty-two billion, eight hundred fifteen million, three hundred ninety-five thousand, five hundred twenty".