50401221 has 8 divisors (see below), whose sum is σ = 72371040. Its totient is φ = 31016112.

The previous prime is 50401193. The next prime is 50401223. The reversal of 50401221 is 12210405.

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

It is not a de Polignac number, because 50401221 - 2⁶ = 50401157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50401221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50401223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646131 + ... + 646208.

It is an arithmetic number, because the mean of its divisors is an integer number (9046380).

Almost surely, 2^50401221 is an apocalyptic number.

It is an amenable number.

50401221 is a deficient number, since it is larger than the sum of its proper divisors (21969819).

50401221 is a wasteful number, since it uses less digits than its factorization.

50401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292355.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 50401221 is about 7099.3817336441. The cubic root of 50401221 is about 369.3859329794.

Adding to 50401221 its reverse (12210405), we get a palindrome (62611626).

The spelling of 50401221 in words is "fifty million, four hundred one thousand, two hundred twenty-one".