50417216521 has 4 divisors (see below), whose sum is σ = 57619676032. Its totient is φ = 43214757012.

The previous prime is 50417216483. The next prime is 50417216573. The reversal of 50417216521 is 12561271405.

50417216521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 50417216521 - 2⁹ = 50417216009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50417216021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3601229745 + ... + 3601229758.

It is an arithmetic number, because the mean of its divisors is an integer number (14404919008).

Almost surely, 2^50417216521 is an apocalyptic number.

It is an amenable number.

50417216521 is a deficient number, since it is larger than the sum of its proper divisors (7202459511).

50417216521 is an equidigital number, since it uses as much as digits as its factorization.

50417216521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202459510.

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 50417216521 its reverse (12561271405), we get a palindrome (62978487926).

The spelling of 50417216521 in words is "fifty billion, four hundred seventeen million, two hundred sixteen thousand, five hundred twenty-one".