52445321 has 2 divisors, whose sum is σ = 52445322. Its totient is φ = 52445320.

The previous prime is 52445303. The next prime is 52445347. The reversal of 52445321 is 12354425.

It is a happy number.

It is an a-pointer prime, because the next prime (52445347) can be obtained adding 52445321 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40960000 + 11485321 = 6400^2 + 3389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52445321 is a prime.

It is not a weakly prime, because it can be changed into another prime (52445621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26222660 + 26222661.

It is an arithmetic number, because the mean of its divisors is an integer number (26222661).

Almost surely, 2^52445321 is an apocalyptic number.

It is an amenable number.

52445321 is a deficient number, since it is larger than the sum of its proper divisors (1).

52445321 is an equidigital number, since it uses as much as digits as its factorization.

52445321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 26.

The square root of 52445321 is about 7241.9141806569. The cubic root of 52445321 is about 374.3135792671.

Adding to 52445321 its reverse (12354425), we get a palindrome (64799746).

The spelling of 52445321 in words is "fifty-two million, four hundred forty-five thousand, three hundred twenty-one".