22231589 has 2 divisors, whose sum is σ = 22231590. Its totient is φ = 22231588.

The previous prime is 22231571. The next prime is 22231607. The reversal of 22231589 is 98513222.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (22231571) and next prime (22231607).

It can be written as a sum of positive squares in only one way, i.e., 13380964 + 8850625 = 3658^2 + 2975^2 .

It is a cyclic number.

It is not a de Polignac number, because 22231589 - 2¹² = 22227493 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 (22231789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115794 + 11115795.

It is an arithmetic number, because the mean of its divisors is an integer number (11115795).

Almost surely, 2^22231589 is an apocalyptic number.

It is an amenable number.

22231589 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231589 is an equidigital number, since it uses as much as digits as its factorization.

22231589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 22231589 is about 4715.0386000541. The cubic root of 22231589 is about 281.1837174503.

The spelling of 22231589 in words is "twenty-two million, two hundred thirty-one thousand, five hundred eighty-nine".