52115321 has 2 divisors, whose sum is σ = 52115322. Its totient is φ = 52115320.

The previous prime is 52115317. The next prime is 52115363. The reversal of 52115321 is 12351125.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43705321 + 8410000 = 6611^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 52115321 - 2² = 52115317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52115293 and 52115302.

It is not a weakly prime, because it can be changed into another prime (52115311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26057660 + 26057661.

It is an arithmetic number, because the mean of its divisors is an integer number (26057661).

Almost surely, 2^52115321 is an apocalyptic number.

It is an amenable number.

52115321 is a deficient number, since it is larger than the sum of its proper divisors (1).

52115321 is an equidigital number, since it uses as much as digits as its factorization.

52115321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300, while the sum is 20.

The square root of 52115321 is about 7219.0941952575. The cubic root of 52115321 is about 373.5268330635.

Adding to 52115321 its reverse (12351125), we get a palindrome (64466446).

The spelling of 52115321 in words is "fifty-two million, one hundred fifteen thousand, three hundred twenty-one".