50421400520 has 64 divisors (see below), whose sum is σ = 113814687600. Its totient is φ = 20103516160.

The previous prime is 50421400501. The next prime is 50421400543. The reversal of 50421400520 is 2500412405.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 27754893604 + 22666506916 = 166598^2 + 150554^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26861822 + ... + 26863698.

Almost surely, 2^50421400520 is an apocalyptic number.

It is an amenable number.

50421400520 is an abundant number, since it is smaller than the sum of its proper divisors (63393287080).

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

50421400520 is a wasteful number, since it uses less digits than its factorization.

50421400520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698 (or 3694 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 50421400520 its reverse (2500412405), we get a palindrome (52921812925).

The spelling of 50421400520 in words is "fifty billion, four hundred twenty-one million, four hundred thousand, five hundred twenty".