52405009 has 2 divisors, whose sum is σ = 52405010. Its totient is φ = 52405008.

The previous prime is 52405007. The next prime is 52405027. The reversal of 52405009 is 90050425.

52405009 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., 36180225 + 16224784 = 6015^2 + 4028^2 .

It is a cyclic number.

It is not a de Polignac number, because 52405009 - 2¹ = 52405007 is a prime.

Together with 52405007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (52405007) 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, 26202504 + 26202505.

It is an arithmetic number, because the mean of its divisors is an integer number (26202505).

Almost surely, 2^52405009 is an apocalyptic number.

It is an amenable number.

52405009 is a deficient number, since it is larger than the sum of its proper divisors (1).

52405009 is an equidigital number, since it uses as much as digits as its factorization.

52405009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 52405009 is about 7239.1304035775. The cubic root of 52405009 is about 374.2176495350.

The spelling of 52405009 in words is "fifty-two million, four hundred five thousand, nine".