53324221 has 2 divisors, whose sum is σ = 53324222. Its totient is φ = 53324220.

The previous prime is 53324209. The next prime is 53324251. The reversal of 53324221 is 12242335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42068196 + 11256025 = 6486^2 + 3355^2 .

It is a cyclic number.

It is not a de Polignac number, because 53324221 - 2¹⁵ = 53291453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53324192 and 53324201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53324251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26662110 + 26662111.

It is an arithmetic number, because the mean of its divisors is an integer number (26662111).

Almost surely, 2^53324221 is an apocalyptic number.

It is an amenable number.

53324221 is a deficient number, since it is larger than the sum of its proper divisors (1).

53324221 is an equidigital number, since it uses as much as digits as its factorization.

53324221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 22.

The square root of 53324221 is about 7302.3435279368. The cubic root of 53324221 is about 376.3929727464.

Adding to 53324221 its reverse (12242335), we get a palindrome (65566556).

The spelling of 53324221 in words is "fifty-three million, three hundred twenty-four thousand, two hundred twenty-one".