53610221 has 12 divisors (see below), whose sum is σ = 62618208. Its totient is φ = 44960952.

The previous prime is 53610203. The next prime is 53610257. The reversal of 53610221 is 12201635.

53610221 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 53610221 - 2⁶ = 53610157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53610193 and 53610202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53613221) 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, 13730 + ... + 17196.

It is an arithmetic number, because the mean of its divisors is an integer number (5218184).

Almost surely, 2^53610221 is an apocalyptic number.

It is an amenable number.

53610221 is a deficient number, since it is larger than the sum of its proper divisors (9007987).

53610221 is an equidigital number, since it uses as much as digits as its factorization.

53610221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568 (or 3521 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 53610221 is about 7321.9000949207. The cubic root of 53610221 is about 377.0646906839.

Adding to 53610221 its reverse (12201635), we get a palindrome (65811856).

The spelling of 53610221 in words is "fifty-three million, six hundred ten thousand, two hundred twenty-one".