50543542421 has 4 divisors (see below), whose sum is σ = 50550224172. Its totient is φ = 50536860672.

The previous prime is 50543542403. The next prime is 50543542433. The reversal of 50543542421 is 12424534505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47736132196 + 2807410225 = 218486^2 + 52985^2 .

It is a cyclic number.

It is not a de Polignac number, because 50543542421 - 2²² = 50539348117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50543542451) 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, 3329516 + ... + 3344661.

It is an arithmetic number, because the mean of its divisors is an integer number (12637556043).

Almost surely, 2^50543542421 is an apocalyptic number.

It is an amenable number.

50543542421 is a deficient number, since it is larger than the sum of its proper divisors (6681751).

50543542421 is an equidigital number, since it uses as much as digits as its factorization.

50543542421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681750.

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 50543542421 in words is "fifty billion, five hundred forty-three million, five hundred forty-two thousand, four hundred twenty-one".