52328821 has 2 divisors, whose sum is σ = 52328822. Its totient is φ = 52328820.

The previous prime is 52328819. The next prime is 52328849. The reversal of 52328821 is 12882325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34939921 + 17388900 = 5911^2 + 4170^2 .

It is a cyclic number.

It is not a de Polignac number, because 52328821 - 2¹ = 52328819 is a prime.

Together with 52328819, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52328621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26164410 + 26164411.

It is an arithmetic number, because the mean of its divisors is an integer number (26164411).

Almost surely, 2^52328821 is an apocalyptic number.

It is an amenable number.

52328821 is a deficient number, since it is larger than the sum of its proper divisors (1).

52328821 is an equidigital number, since it uses as much as digits as its factorization.

52328821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 31.

The square root of 52328821 is about 7233.8662553299. The cubic root of 52328821 is about 374.0362119036.

The spelling of 52328821 in words is "fifty-two million, three hundred twenty-eight thousand, eight hundred twenty-one".