50520221440 has 144 divisors (see below), whose sum is σ = 130471790400. Its totient is φ = 18631950336.

The previous prime is 50520221383. The next prime is 50520221447. The reversal of 50520221440 is 4412202505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50520221447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24775941 + ... + 24777979.

It is an arithmetic number, because the mean of its divisors is an integer number (906054100).

Almost surely, 2^50520221440 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 50520221440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65235895200).

50520221440 is an abundant number, since it is smaller than the sum of its proper divisors (79951568960).

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

50520221440 is a wasteful number, since it uses less digits than its factorization.

50520221440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562 (or 3548 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 50520221440 its reverse (4412202505), we get a palindrome (54932423945).

The spelling of 50520221440 in words is "fifty billion, five hundred twenty million, two hundred twenty-one thousand, four hundred forty".