50542221 has 8 divisors (see below), whose sum is σ = 68494624. Its totient is φ = 33142320.

The previous prime is 50542181. The next prime is 50542237. The reversal of 50542221 is 12224505.

It is a happy number.

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

It is not a de Polignac number, because 50542221 - 2⁹ = 50541709 is a prime.

It is a super-2 number, since 2×50542221² = 5109032207225682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50542021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137911 + ... + 138276.

It is an arithmetic number, because the mean of its divisors is an integer number (8561828).

Almost surely, 2^50542221 is an apocalyptic number.

It is an amenable number.

50542221 is a deficient number, since it is larger than the sum of its proper divisors (17952403).

50542221 is a wasteful number, since it uses less digits than its factorization.

50542221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276251.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 50542221 is about 7109.3052403171. The cubic root of 50542221 is about 369.7300709598.

Adding to 50542221 its reverse (12224505), we get a palindrome (62766726).

The spelling of 50542221 in words is "fifty million, five hundred forty-two thousand, two hundred twenty-one".