22531829 has 2 divisors, whose sum is σ = 22531830. Its totient is φ = 22531828.

The previous prime is 22531819. The next prime is 22531841. The reversal of 22531829 is 92813522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20566225 + 1965604 = 4535^2 + 1402^2 .

It is a cyclic number.

It is not a de Polignac number, because 22531829 - 2⁸ = 22531573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22531795 and 22531804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22531819) 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, 11265914 + 11265915.

It is an arithmetic number, because the mean of its divisors is an integer number (11265915).

Almost surely, 2^22531829 is an apocalyptic number.

It is an amenable number.

22531829 is a deficient number, since it is larger than the sum of its proper divisors (1).

22531829 is an equidigital number, since it uses as much as digits as its factorization.

22531829 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22531829 is about 4746.7703757397. The cubic root of 22531829 is about 282.4438669894.

The spelling of 22531829 in words is "twenty-two million, five hundred thirty-one thousand, eight hundred twenty-nine".