50513514521 has 4 divisors (see below), whose sum is σ = 51224972544. Its totient is φ = 49802056500.

The previous prime is 50513514511. The next prime is 50513514613. The reversal of 50513514521 is 12541531505.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50513514521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50513514511) 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, 355728905 + ... + 355729046.

It is an arithmetic number, because the mean of its divisors is an integer number (12806243136).

Almost surely, 2^50513514521 is an apocalyptic number.

It is an amenable number.

50513514521 is a deficient number, since it is larger than the sum of its proper divisors (711458023).

50513514521 is an equidigital number, since it uses as much as digits as its factorization.

50513514521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711458022.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 50513514521 in words is "fifty billion, five hundred thirteen million, five hundred fourteen thousand, five hundred twenty-one".