52121717200 has 120 divisors (see below), whose sum is σ = 143199763200. Its totient is φ = 17859264000.

The previous prime is 52121717189. The next prime is 52121717201. The reversal of 52121717200 is 271712125.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121717201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5452425 + ... + 5461975.

It is an arithmetic number, because the mean of its divisors is an integer number (1193331360).

Almost surely, 2^52121717200 is an apocalyptic number.

52121717200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52121717200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71599881600).

52121717200 is an abundant number, since it is smaller than the sum of its proper divisors (91078046000).

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

52121717200 is a wasteful number, since it uses less digits than its factorization.

52121717200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11525 (or 11514 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 28.

The spelling of 52121717200 in words is "fifty-two billion, one hundred twenty-one million, seven hundred seventeen thousand, two hundred".