22804549 has 2 divisors, whose sum is σ = 22804550. Its totient is φ = 22804548.

The previous prime is 22804519. The next prime is 22804553. The reversal of 22804549 is 94540822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 431649 = 4730^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 22804549 - 2⁵ = 22804517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22804519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11402274 + 11402275.

It is an arithmetic number, because the mean of its divisors is an integer number (11402275).

Almost surely, 2^22804549 is an apocalyptic number.

It is an amenable number.

22804549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22804549 is an equidigital number, since it uses as much as digits as its factorization.

22804549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 22804549 is about 4775.4108723753. The cubic root of 22804549 is about 283.5788449469.

The spelling of 22804549 in words is "twenty-two million, eight hundred four thousand, five hundred forty-nine".