50231221 has 8 divisors (see below), whose sum is σ = 50741600. Its totient is φ = 49723632.

The previous prime is 50231197. The next prime is 50231249. The reversal of 50231221 is 12213205.

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

It is a cyclic number.

It is not a de Polignac number, because 50231221 - 2⁵ = 50231189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50231195 and 50231204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50241221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56446 + ... + 57328.

It is an arithmetic number, because the mean of its divisors is an integer number (6342700).

Almost surely, 2^50231221 is an apocalyptic number.

It is an amenable number.

50231221 is a deficient number, since it is larger than the sum of its proper divisors (510379).

50231221 is a wasteful number, since it uses less digits than its factorization.

50231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 50231221 is about 7087.3987470722. The cubic root of 50231221 is about 368.9701603600.

Adding to 50231221 its reverse (12213205), we get a palindrome (62444426).

The spelling of 50231221 in words is "fifty million, two hundred thirty-one thousand, two hundred twenty-one".