52424221 has 2 divisors, whose sum is σ = 52424222. Its totient is φ = 52424220.

The previous prime is 52424201. The next prime is 52424233. The reversal of 52424221 is 12242425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52272900 + 151321 = 7230^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 52424221 - 2⁷ = 52424093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52424192 and 52424201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52424201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26212110 + 26212111.

It is an arithmetic number, because the mean of its divisors is an integer number (26212111).

Almost surely, 2^52424221 is an apocalyptic number.

It is an amenable number.

52424221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52424221 is an equidigital number, since it uses as much as digits as its factorization.

52424221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280, while the sum is 22.

The square root of 52424221 is about 7240.4572369430. The cubic root of 52424221 is about 374.2633741151.

Adding to 52424221 its reverse (12242425), we get a palindrome (64666646).

The spelling of 52424221 in words is "fifty-two million, four hundred twenty-four thousand, two hundred twenty-one".