55228842240 has 576 divisors, whose sum is σ = 212133841920. Its totient is φ = 12066324480.

The previous prime is 55228842233. The next prime is 55228842257. The reversal of 55228842240 is 4224882255.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55228842192 and 55228842201.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23610991 + ... + 23613329.

It is an arithmetic number, because the mean of its divisors is an integer number (368287920).

Almost surely, 2^55228842240 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 55228842240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106066920960).

55228842240 is an abundant number, since it is smaller than the sum of its proper divisors (156904999680).

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

55228842240 is a wasteful number, since it uses less digits than its factorization.

55228842240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430 (or 2416 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 42.

The spelling of 55228842240 in words is "fifty-five billion, two hundred twenty-eight million, eight hundred forty-two thousand, two hundred forty".