53032321 has 2 divisors, whose sum is σ = 53032322. Its totient is φ = 53032320.

The previous prime is 53032313. The next prime is 53032339. The reversal of 53032321 is 12323035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43046721 + 9985600 = 6561^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 53032321 - 2³ = 53032313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53032361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26516160 + 26516161.

It is an arithmetic number, because the mean of its divisors is an integer number (26516161).

Almost surely, 2^53032321 is an apocalyptic number.

It is an amenable number.

53032321 is a deficient number, since it is larger than the sum of its proper divisors (1).

53032321 is an equidigital number, since it uses as much as digits as its factorization.

53032321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 53032321 is about 7282.3293663498. The cubic root of 53032321 is about 375.7049164542.

Adding to 53032321 its reverse (12323035), we get a palindrome (65355356).

The spelling of 53032321 in words is "fifty-three million, thirty-two thousand, three hundred twenty-one".