52221112542 has 48 divisors (see below), whose sum is σ = 118249342848. Its totient is φ = 16624230480.

The previous prime is 52221112513. The next prime is 52221112631. The reversal of 52221112542 is 24521112225.

52221112542 is a `hidden beast` number, since 5 + 2 + 2 + 2 + 1 + 112 + 542 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168117 + ... + 364287.

It is an arithmetic number, because the mean of its divisors is an integer number (2463527976).

Almost surely, 2^52221112542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52221112542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59124671424).

52221112542 is an abundant number, since it is smaller than the sum of its proper divisors (66028230306).

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

52221112542 is a wasteful number, since it uses less digits than its factorization.

52221112542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196845 (or 196842 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

Adding to 52221112542 its reverse (24521112225), we get a palindrome (76742224767).

The spelling of 52221112542 in words is "fifty-two billion, two hundred twenty-one million, one hundred twelve thousand, five hundred forty-two".