20359589 has 2 divisors, whose sum is σ = 20359590. Its totient is φ = 20359588.

The previous prime is 20359571. The next prime is 20359607. The reversal of 20359589 is 98595302.

It is a balanced prime because it is at equal distance from previous prime (20359571) and next prime (20359607).

It can be written as a sum of positive squares in only one way, i.e., 15737089 + 4622500 = 3967^2 + 2150^2 .

It is a cyclic number.

It is not a de Polignac number, because 20359589 - 2⁸ = 20359333 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20359519) 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, 10179794 + 10179795.

It is an arithmetic number, because the mean of its divisors is an integer number (10179795).

Almost surely, 2^20359589 is an apocalyptic number.

It is an amenable number.

20359589 is a deficient number, since it is larger than the sum of its proper divisors (1).

20359589 is an equidigital number, since it uses as much as digits as its factorization.

20359589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 20359589 is about 4512.1601257048. The cubic root of 20359589 is about 273.0588994824.

The spelling of 20359589 in words is "twenty million, three hundred fifty-nine thousand, five hundred eighty-nine".