50543251521 has 24 divisors (see below), whose sum is σ = 78493404960. Its totient is φ = 28845093312.

The previous prime is 50543251513. The next prime is 50543251537. The reversal of 50543251521 is 12515234505.

It is not a de Polignac number, because 50543251521 - 2³ = 50543251513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50543251541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102756 + ... + 334133.

It is an arithmetic number, because the mean of its divisors is an integer number (3270558540).

Almost surely, 2^50543251521 is an apocalyptic number.

It is an amenable number.

50543251521 is a deficient number, since it is larger than the sum of its proper divisors (27950153439).

50543251521 is a wasteful number, since it uses less digits than its factorization.

50543251521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437693 (or 437686 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 50543251521 in words is "fifty billion, five hundred forty-three million, two hundred fifty-one thousand, five hundred twenty-one".