53821589 has 2 divisors, whose sum is σ = 53821590. Its totient is φ = 53821588.

The previous prime is 53821583. The next prime is 53821591. The reversal of 53821589 is 98512835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45670564 + 8151025 = 6758^2 + 2855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53821589 is a prime.

Together with 53821591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53821583) 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, 26910794 + 26910795.

It is an arithmetic number, because the mean of its divisors is an integer number (26910795).

Almost surely, 2^53821589 is an apocalyptic number.

It is an amenable number.

53821589 is a deficient number, since it is larger than the sum of its proper divisors (1).

53821589 is an equidigital number, since it uses as much as digits as its factorization.

53821589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 41.

The square root of 53821589 is about 7336.3198539867. The cubic root of 53821589 is about 377.5595894411.

The spelling of 53821589 in words is "fifty-three million, eight hundred twenty-one thousand, five hundred eighty-nine".