50251220440 has 32 divisors (see below), whose sum is σ = 113263310160. Its totient is φ = 20065276800.

The previous prime is 50251220423. The next prime is 50251220447. The reversal of 50251220440 is 4402215205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50251220447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1077231 + ... + 1122910.

Almost surely, 2^50251220440 is an apocalyptic number.

It is an amenable number.

50251220440 is an abundant number, since it is smaller than the sum of its proper divisors (63012089720).

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

50251220440 is a wasteful number, since it uses less digits than its factorization.

50251220440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200723 (or 2200719 counting only the distinct ones).

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

Adding to 50251220440 its reverse (4402215205), we get a palindrome (54653435645).

The spelling of 50251220440 in words is "fifty billion, two hundred fifty-one million, two hundred twenty thousand, four hundred forty".