50521431 has 8 divisors (see below), whose sum is σ = 68928640. Its totient is φ = 32897592.

The previous prime is 50521421. The next prime is 50521439. The reversal of 50521431 is 13412505.

50521431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50521431 - 2¹⁴ = 50505047 is a prime.

It is a super-2 number, since 2×50521431² = 5104829980575522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50521398 and 50521407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50521439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195691 + ... + 195948.

It is an arithmetic number, because the mean of its divisors is an integer number (8616080).

Almost surely, 2^50521431 is an apocalyptic number.

50521431 is a deficient number, since it is larger than the sum of its proper divisors (18407209).

50521431 is a wasteful number, since it uses less digits than its factorization.

50521431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391685.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 50521431 is about 7107.8429217309. The cubic root of 50521431 is about 369.6793691755.

Adding to 50521431 its reverse (13412505), we get a palindrome (63933936).

The spelling of 50521431 in words is "fifty million, five hundred twenty-one thousand, four hundred thirty-one".