52856322520 has 32 divisors (see below), whose sum is σ = 119306711520. Its totient is φ = 21074976000.

The previous prime is 52856322511. The next prime is 52856322581. The reversal of 52856322520 is 2522365825.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2098356 + ... + 2123395.

It is an arithmetic number, because the mean of its divisors is an integer number (3728334735).

Almost surely, 2^52856322520 is an apocalyptic number.

It is an amenable number.

52856322520 is an abundant number, since it is smaller than the sum of its proper divisors (66450389000).

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

52856322520 is a wasteful number, since it uses less digits than its factorization.

52856322520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222075 (or 4222071 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 52856322520 in words is "fifty-two billion, eight hundred fifty-six million, three hundred twenty-two thousand, five hundred twenty".