52100555220 has 144 divisors (see below), whose sum is σ = 180797984640. Its totient is φ = 11896651008.

The previous prime is 52100555191. The next prime is 52100555251. The reversal of 52100555220 is 2255500125.

52100555220 is a `hidden beast` number, since 5 + 2 + 100 + 5 + 552 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1255971 + ... + 1296789.

It is an arithmetic number, because the mean of its divisors is an integer number (1255541560).

Almost surely, 2^52100555220 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 52100555220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90398992320).

52100555220 is an abundant number, since it is smaller than the sum of its proper divisors (128697429420).

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

52100555220 is a wasteful number, since it uses less digits than its factorization.

52100555220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41854 (or 41849 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The spelling of 52100555220 in words is "fifty-two billion, one hundred million, five hundred fifty-five thousand, two hundred twenty".