50421571 has 4 divisors (see below), whose sum is σ = 50613552. Its totient is φ = 50229592.

The previous prime is 50421557. The next prime is 50421599. The reversal of 50421571 is 17512405.

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

It is a cyclic number.

It is not a de Polignac number, because 50421571 - 2¹⁵ = 50388803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50421521) 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, 95596 + ... + 96121.

It is an arithmetic number, because the mean of its divisors is an integer number (12653388).

Almost surely, 2^50421571 is an apocalyptic number.

50421571 is a deficient number, since it is larger than the sum of its proper divisors (191981).

50421571 is a wasteful number, since it uses less digits than its factorization.

50421571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191980.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 50421571 is about 7100.8148124001. The cubic root of 50421571 is about 369.4356407188.

Adding to 50421571 its reverse (17512405), we get a palindrome (67933976).

The spelling of 50421571 in words is "fifty million, four hundred twenty-one thousand, five hundred seventy-one".