52505640220 has 48 divisors (see below), whose sum is σ = 121525756128. Its totient is φ = 18896117760.

The previous prime is 52505640181. The next prime is 52505640247. The reversal of 52505640220 is 2204650525.

It is a happy number.

52505640220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1208877 + ... + 1251556.

It is an arithmetic number, because the mean of its divisors is an integer number (2531786586).

Almost surely, 2^52505640220 is an apocalyptic number.

It is an amenable number.

52505640220 is an abundant number, since it is smaller than the sum of its proper divisors (69020115908).

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

52505640220 is a wasteful number, since it uses less digits than its factorization.

52505640220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460550 (or 2460548 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 52505640220 in words is "fifty-two billion, five hundred five million, six hundred forty thousand, two hundred twenty".