22889081 has 2 divisors, whose sum is σ = 22889082. Its totient is φ = 22889080.

The previous prime is 22889023. The next prime is 22889099. The reversal of 22889081 is 18098822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22005481 + 883600 = 4691^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 22889081 - 2⁶ = 22889017 is a prime.

It is a super-2 number, since 2×22889081² = 1047820058049122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22889011) 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, 11444540 + 11444541.

It is an arithmetic number, because the mean of its divisors is an integer number (11444541).

Almost surely, 2^22889081 is an apocalyptic number.

It is an amenable number.

22889081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22889081 is an equidigital number, since it uses as much as digits as its factorization.

22889081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 22889081 is about 4784.2534422833. The cubic root of 22889081 is about 283.9288033195.

The spelling of 22889081 in words is "twenty-two million, eight hundred eighty-nine thousand, eighty-one".