52124221 has 2 divisors, whose sum is σ = 52124222. Its totient is φ = 52124220.

The previous prime is 52124183. The next prime is 52124291. The reversal of 52124221 is 12242125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44222500 + 7901721 = 6650^2 + 2811^2 .

It is a cyclic number.

It is not a de Polignac number, because 52124221 - 2¹¹ = 52122173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52124291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26062110 + 26062111.

It is an arithmetic number, because the mean of its divisors is an integer number (26062111).

Almost surely, 2^52124221 is an apocalyptic number.

It is an amenable number.

52124221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52124221 is an equidigital number, since it uses as much as digits as its factorization.

52124221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 19.

The square root of 52124221 is about 7219.7105897674. The cubic root of 52124221 is about 373.5480948827.

Adding to 52124221 its reverse (12242125), we get a palindrome (64366346).

It can be divided in two parts, 521 and 24221, that added together give a palindrome (24742).

The spelling of 52124221 in words is "fifty-two million, one hundred twenty-four thousand, two hundred twenty-one".