50512003421 has 4 divisors (see below), whose sum is σ = 55104003744. Its totient is φ = 45920003100.

The previous prime is 50512003417. The next prime is 50512003427. The reversal of 50512003421 is 12430021505.

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 not a de Polignac number, because 50512003421 - 2² = 50512003417 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 (50512003427) 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, 2296000145 + ... + 2296000166.

It is an arithmetic number, because the mean of its divisors is an integer number (13776000936).

Almost surely, 2^50512003421 is an apocalyptic number.

It is an amenable number.

50512003421 is a deficient number, since it is larger than the sum of its proper divisors (4592000323).

50512003421 is a wasteful number, since it uses less digits than its factorization.

50512003421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592000322.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 50512003421 its reverse (12430021505), we get a palindrome (62942024926).

The spelling of 50512003421 in words is "fifty billion, five hundred twelve million, three thousand, four hundred twenty-one".