22541689 has 2 divisors, whose sum is σ = 22541690. Its totient is φ = 22541688.

The previous prime is 22541683. The next prime is 22541693. The reversal of 22541689 is 98614522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22250089 + 291600 = 4717^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 22541689 - 2¹⁷ = 22410617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22541683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11270844 + 11270845.

It is an arithmetic number, because the mean of its divisors is an integer number (11270845).

Almost surely, 2^22541689 is an apocalyptic number.

It is an amenable number.

22541689 is a deficient number, since it is larger than the sum of its proper divisors (1).

22541689 is an equidigital number, since it uses as much as digits as its factorization.

22541689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 22541689 is about 4747.8088630441. The cubic root of 22541689 is about 282.4850604259.

It can be divided in two parts, 225 and 41689, that added together give a palindrome (41914).

The spelling of 22541689 in words is "twenty-two million, five hundred forty-one thousand, six hundred eighty-nine".