55202444520 has 128 divisors (see below), whose sum is σ = 171103968000. Its totient is φ = 14236839936.

The previous prime is 55202444477. The next prime is 55202444533. The reversal of 55202444520 is 2544420255.

55202444520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 704256 + ... + 778704.

It is an arithmetic number, because the mean of its divisors is an integer number (1336749750).

Almost surely, 2^55202444520 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 55202444520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85551984000).

55202444520 is an abundant number, since it is smaller than the sum of its proper divisors (115901523480).

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

55202444520 is a wasteful number, since it uses less digits than its factorization.

55202444520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74667 (or 74663 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 33.

Adding to 55202444520 its reverse (2544420255), we get a palindrome (57746864775).

The spelling of 55202444520 in words is "fifty-five billion, two hundred two million, four hundred forty-four thousand, five hundred twenty".