52447489 has 2 divisors, whose sum is σ = 52447490. Its totient is φ = 52447488.

The previous prime is 52447477. The next prime is 52447517. The reversal of 52447489 is 98474425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51365889 + 1081600 = 7167^2 + 1040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52447489 is a prime.

It is not a weakly prime, because it can be changed into another prime (52447459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26223744 + 26223745.

It is an arithmetic number, because the mean of its divisors is an integer number (26223745).

Almost surely, 2^52447489 is an apocalyptic number.

It is an amenable number.

52447489 is a deficient number, since it is larger than the sum of its proper divisors (1).

52447489 is an equidigital number, since it uses as much as digits as its factorization.

52447489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 43.

The square root of 52447489 is about 7242.0638632920. The cubic root of 52447489 is about 374.3187370241.

The spelling of 52447489 in words is "fifty-two million, four hundred forty-seven thousand, four hundred eighty-nine".