52444221 has 8 divisors (see below), whose sum is σ = 70910784. Its totient is φ = 34470240.

The previous prime is 52444211. The next prime is 52444243. The reversal of 52444221 is 12244425.

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 52444221 - 2⁹ = 52443709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52444191 and 52444200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52444211) 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, 122896 + ... + 123321.

It is an arithmetic number, because the mean of its divisors is an integer number (8863848).

Almost surely, 2^52444221 is an apocalyptic number.

It is an amenable number.

52444221 is a deficient number, since it is larger than the sum of its proper divisors (18466563).

52444221 is a wasteful number, since it uses less digits than its factorization.

52444221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246291.

The product of its digits is 2560, while the sum is 24.

The square root of 52444221 is about 7241.8382334874. The cubic root of 52444221 is about 374.3109622697.

Adding to 52444221 its reverse (12244425), we get a palindrome (64688646).

The spelling of 52444221 in words is "fifty-two million, four hundred forty-four thousand, two hundred twenty-one".