52248403221 has 32 divisors (see below), whose sum is σ = 83892848640. Its totient is φ = 28255863744.

The previous prime is 52248403217. The next prime is 52248403267. The reversal of 52248403221 is 12230484225.

It is not a de Polignac number, because 52248403221 - 2² = 52248403217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52248403201) 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 31 ways as a sum of consecutive naturals, for example, 325611 + ... + 458823.

It is an arithmetic number, because the mean of its divisors is an integer number (2621651520).

Almost surely, 2^52248403221 is an apocalyptic number.

It is an amenable number.

52248403221 is a deficient number, since it is larger than the sum of its proper divisors (31644445419).

52248403221 is a wasteful number, since it uses less digits than its factorization.

52248403221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134225.

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 52248403221 its reverse (12230484225), we get a palindrome (64478887446).

The spelling of 52248403221 in words is "fifty-two billion, two hundred forty-eight million, four hundred three thousand, two hundred twenty-one".