55259424220 has 192 divisors, whose sum is σ = 156473856000. Its totient is φ = 15830922240.

The previous prime is 55259424197. The next prime is 55259424221. The reversal of 55259424220 is 2242495255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55259424221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4779006 + ... + 4790554.

It is an arithmetic number, because the mean of its divisors is an integer number (814968000).

Almost surely, 2^55259424220 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 55259424220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78236928000).

55259424220 is an abundant number, since it is smaller than the sum of its proper divisors (101214431780).

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

55259424220 is a wasteful number, since it uses less digits than its factorization.

55259424220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828 (or 11826 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 55259424220 in words is "fifty-five billion, two hundred fifty-nine million, four hundred twenty-four thousand, two hundred twenty".