52587809 has 2 divisors, whose sum is σ = 52587810. Its totient is φ = 52587808.

The previous prime is 52587803. The next prime is 52587823. The reversal of 52587809 is 90878525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48344209 + 4243600 = 6953^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 52587809 - 2⁴ = 52587793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52587809.

It is not a weakly prime, because it can be changed into another prime (52587803) 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, 26293904 + 26293905.

It is an arithmetic number, because the mean of its divisors is an integer number (26293905).

Almost surely, 2^52587809 is an apocalyptic number.

It is an amenable number.

52587809 is a deficient number, since it is larger than the sum of its proper divisors (1).

52587809 is an equidigital number, since it uses as much as digits as its factorization.

52587809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 52587809 is about 7251.7452382168. The cubic root of 52587809 is about 374.6522619379.

The spelling of 52587809 in words is "fifty-two million, five hundred eighty-seven thousand, eight hundred nine".