22551941 has 2 divisors, whose sum is σ = 22551942. Its totient is φ = 22551940.

The previous prime is 22551931. The next prime is 22551959. The reversal of 22551941 is 14915522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 3880900 = 4321^2 + 1970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22551941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22551931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11275970 + 11275971.

It is an arithmetic number, because the mean of its divisors is an integer number (11275971).

Almost surely, 2^22551941 is an apocalyptic number.

It is an amenable number.

22551941 is a deficient number, since it is larger than the sum of its proper divisors (1).

22551941 is an equidigital number, since it uses as much as digits as its factorization.

22551941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 22551941 is about 4748.8883962460. Note that the first 3 decimals coincide. The cubic root of 22551941 is about 282.5278788369.

The spelling of 22551941 in words is "twenty-two million, five hundred fifty-one thousand, nine hundred forty-one".