52644209 has 2 divisors, whose sum is σ = 52644210. Its totient is φ = 52644208.

The previous prime is 52644203. The next prime is 52644239. The reversal of 52644209 is 90244625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27793984 + 24850225 = 5272^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 52644209 - 2⁸ = 52643953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52644203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26322104 + 26322105.

It is an arithmetic number, because the mean of its divisors is an integer number (26322105).

Almost surely, 2^52644209 is an apocalyptic number.

It is an amenable number.

52644209 is a deficient number, since it is larger than the sum of its proper divisors (1).

52644209 is an equidigital number, since it uses as much as digits as its factorization.

52644209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 52644209 is about 7255.6329151908. The cubic root of 52644209 is about 374.7861512583.

The spelling of 52644209 in words is "fifty-two million, six hundred forty-four thousand, two hundred nine".