50521432447 has 4 divisors (see below), whose sum is σ = 50542582360. Its totient is φ = 50500282536.

The previous prime is 50521432427. The next prime is 50521432487. The reversal of 50521432447 is 74423412505.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50521432447 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 (50521432427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10571373 + ... + 10576150.

It is an arithmetic number, because the mean of its divisors is an integer number (12635645590).

Almost surely, 2^50521432447 is an apocalyptic number.

50521432447 is a deficient number, since it is larger than the sum of its proper divisors (21149913).

50521432447 is a wasteful number, since it uses less digits than its factorization.

50521432447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21149912.

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 50521432447 in words is "fifty billion, five hundred twenty-one million, four hundred thirty-two thousand, four hundred forty-seven".