52136321 has 2 divisors, whose sum is σ = 52136322. Its totient is φ = 52136320.

The previous prime is 52136317. The next prime is 52136341. The reversal of 52136321 is 12363125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52128400 + 7921 = 7220^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 52136321 - 2² = 52136317 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 (52136311) 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, 26068160 + 26068161.

It is an arithmetic number, because the mean of its divisors is an integer number (26068161).

Almost surely, 2^52136321 is an apocalyptic number.

It is an amenable number.

52136321 is a deficient number, since it is larger than the sum of its proper divisors (1).

52136321 is an equidigital number, since it uses as much as digits as its factorization.

52136321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 52136321 is about 7220.5485248698. The cubic root of 52136321 is about 373.5769975192.

Adding to 52136321 its reverse (12363125), we get a palindrome (64499446).

The spelling of 52136321 in words is "fifty-two million, one hundred thirty-six thousand, three hundred twenty-one".