52809121 has 2 divisors, whose sum is σ = 52809122. Its totient is φ = 52809120.

The previous prime is 52809109. The next prime is 52809143. The reversal of 52809121 is 12190825.

52809121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31979025 + 20830096 = 5655^2 + 4564^2 .

It is a cyclic number.

It is not a de Polignac number, because 52809121 - 2⁷ = 52808993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52809121.

It is not a weakly prime, because it can be changed into another prime (52809181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26404560 + 26404561.

It is an arithmetic number, because the mean of its divisors is an integer number (26404561).

Almost surely, 2^52809121 is an apocalyptic number.

It is an amenable number.

52809121 is a deficient number, since it is larger than the sum of its proper divisors (1).

52809121 is an equidigital number, since it uses as much as digits as its factorization.

52809121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 52809121 is about 7266.9884408880. The cubic root of 52809121 is about 375.1770920596.

Adding to 52809121 its reverse (12190825), we get a palindrome (64999946).

The spelling of 52809121 in words is "fifty-two million, eight hundred nine thousand, one hundred twenty-one".