53603321 has 2 divisors, whose sum is σ = 53603322. Its totient is φ = 53603320.

The previous prime is 53603311. The next prime is 53603353. The reversal of 53603321 is 12330635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 3759721 = 7060^2 + 1939^2 .

It is a cyclic number.

It is not a de Polignac number, because 53603321 - 2¹⁴ = 53586937 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53603311) 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, 26801660 + 26801661.

It is an arithmetic number, because the mean of its divisors is an integer number (26801661).

Almost surely, 2^53603321 is an apocalyptic number.

It is an amenable number.

53603321 is a deficient number, since it is larger than the sum of its proper divisors (1).

53603321 is an equidigital number, since it uses as much as digits as its factorization.

53603321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 53603321 is about 7321.4288905923. The cubic root of 53603321 is about 377.0485130599.

Adding to 53603321 its reverse (12330635), we get a palindrome (65933956).

The spelling of 53603321 in words is "fifty-three million, six hundred three thousand, three hundred twenty-one".