53230221 has 12 divisors (see below), whose sum is σ = 83878080. Its totient is φ = 32260680.

The previous prime is 53230217. The next prime is 53230231. The reversal of 53230221 is 12203235.

53230221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53230221 - 2² = 53230217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53230194 and 53230203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53230231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268741 + ... + 268938.

It is an arithmetic number, because the mean of its divisors is an integer number (6989840).

Almost surely, 2^53230221 is an apocalyptic number.

It is an amenable number.

53230221 is a deficient number, since it is larger than the sum of its proper divisors (30647859).

53230221 is a wasteful number, since it uses less digits than its factorization.

53230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537696 (or 537693 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53230221 is about 7295.9043990447. The cubic root of 53230221 is about 376.1716740007.

Adding to 53230221 its reverse (12203235), we get a palindrome (65433456).

The spelling of 53230221 in words is "fifty-three million, two hundred thirty thousand, two hundred twenty-one".