22752649 has 2 divisors, whose sum is σ = 22752650. Its totient is φ = 22752648.

The previous prime is 22752643. The next prime is 22752673. The reversal of 22752649 is 94625722.

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., 12027024 + 10725625 = 3468^2 + 3275^2 .

It is a cyclic number.

It is not a de Polignac number, because 22752649 - 2³ = 22752641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22752641) 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, 11376324 + 11376325.

It is an arithmetic number, because the mean of its divisors is an integer number (11376325).

Almost surely, 2^22752649 is an apocalyptic number.

It is an amenable number.

22752649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22752649 is an equidigital number, since it uses as much as digits as its factorization.

22752649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 22752649 is about 4769.9736896549. The cubic root of 22752649 is about 283.3635527937.

The spelling of 22752649 in words is "twenty-two million, seven hundred fifty-two thousand, six hundred forty-nine".