50536330021 has 4 divisors (see below), whose sum is σ = 51057323212. Its totient is φ = 50015336832.

The previous prime is 50536329973. The next prime is 50536330051. The reversal of 50536330021 is 12003363505.

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 20847316996 + 29689013025 = 144386^2 + 172305^2 .

It is a cyclic number.

It is not a de Polignac number, because 50536330021 - 2²⁹ = 49999459109 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 (50536330051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260496450 + ... + 260496643.

It is an arithmetic number, because the mean of its divisors is an integer number (12764330803).

Almost surely, 2^50536330021 is an apocalyptic number.

It is an amenable number.

50536330021 is a deficient number, since it is larger than the sum of its proper divisors (520993191).

50536330021 is an equidigital number, since it uses as much as digits as its factorization.

50536330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520993190.

The product of its (nonzero) digits is 8100, while the sum is 28.

Adding to 50536330021 its reverse (12003363505), we get a palindrome (62539693526).

The spelling of 50536330021 in words is "fifty billion, five hundred thirty-six million, three hundred thirty thousand, twenty-one".