50531544121 has 4 divisors (see below), whose sum is σ = 51171184000. Its totient is φ = 49891904244.

The previous prime is 50531544103. The next prime is 50531544149. The reversal of 50531544121 is 12144513505.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12144513505 = 5 ⋅2428902701.

It is a cyclic number.

It is not a de Polignac number, because 50531544121 - 2²¹ = 50529446969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50531544181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319819821 + ... + 319819978.

It is an arithmetic number, because the mean of its divisors is an integer number (12792796000).

Almost surely, 2^50531544121 is an apocalyptic number.

It is an amenable number.

50531544121 is a deficient number, since it is larger than the sum of its proper divisors (639639879).

50531544121 is an equidigital number, since it uses as much as digits as its factorization.

50531544121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639639878.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 50531544121 in words is "fifty billion, five hundred thirty-one million, five hundred forty-four thousand, one hundred twenty-one".