55021444450 has 96 divisors (see below), whose sum is σ = 119937323520. Its totient is φ = 18385228800.

The previous prime is 55021444447. The next prime is 55021444487. The reversal of 55021444450 is 5444412055.

55021444450 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 47 ways as a sum of consecutive naturals, for example, 23087959 + ... + 23090341.

It is an arithmetic number, because the mean of its divisors is an integer number (1249347120).

Almost surely, 2^55021444450 is an apocalyptic number.

55021444450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55021444450 is an abundant number, since it is smaller than the sum of its proper divisors (64915879070).

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

55021444450 is a wasteful number, since it uses less digits than its factorization.

55021444450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052 (or 4047 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

The spelling of 55021444450 in words is "fifty-five billion, twenty-one million, four hundred forty-four thousand, four hundred fifty".