50440355521 has 8 divisors (see below), whose sum is σ = 50914879488. Its totient is φ = 49968024000.

The previous prime is 50440355503. The next prime is 50440355557. The reversal of 50440355521 is 12555304405.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50440355521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50440355501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501865 + ... + 593926.

It is an arithmetic number, because the mean of its divisors is an integer number (6364359936).

Almost surely, 2^50440355521 is an apocalyptic number.

It is an amenable number.

50440355521 is a deficient number, since it is larger than the sum of its proper divisors (474523967).

50440355521 is a wasteful number, since it uses less digits than its factorization.

50440355521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096223.

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 50440355521 its reverse (12555304405), we get a palindrome (62995659926).

The spelling of 50440355521 in words is "fifty billion, four hundred forty million, three hundred fifty-five thousand, five hundred twenty-one".