21114589 has 2 divisors, whose sum is σ = 21114590. Its totient is φ = 21114588.

The previous prime is 21114571. The next prime is 21114607. The reversal of 21114589 is 98541112.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (21114571) and next prime (21114607).

It can be written as a sum of positive squares in only one way, i.e., 16564900 + 4549689 = 4070^2 + 2133^2 .

It is a cyclic number.

It is not a de Polignac number, because 21114589 - 2⁵ = 21114557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21114589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21114089) 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, 10557294 + 10557295.

It is an arithmetic number, because the mean of its divisors is an integer number (10557295).

Almost surely, 2^21114589 is an apocalyptic number.

It is an amenable number.

21114589 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114589 is an equidigital number, since it uses as much as digits as its factorization.

21114589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 31.

The square root of 21114589 is about 4595.0613706457. The cubic root of 21114589 is about 276.3933209341.

The spelling of 21114589 in words is "twenty-one million, one hundred fourteen thousand, five hundred eighty-nine".