27222289 has 2 divisors, whose sum is σ = 27222290. Its totient is φ = 27222288.

The previous prime is 27222263. The next prime is 27222313. The reversal of 27222289 is 98222272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25553025 + 1669264 = 5055^2 + 1292^2 .

It is a cyclic number.

It is not a de Polignac number, because 27222289 - 2¹³ = 27214097 is a prime.

It is not a weakly prime, because it can be changed into another prime (27222989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13611144 + 13611145.

It is an arithmetic number, because the mean of its divisors is an integer number (13611145).

Almost surely, 2^27222289 is an apocalyptic number.

It is an amenable number.

27222289 is a deficient number, since it is larger than the sum of its proper divisors (1).

27222289 is an equidigital number, since it uses as much as digits as its factorization.

27222289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 27222289 is about 5217.4983469092. The cubic root of 27222289 is about 300.8210435012.

The spelling of 27222289 in words is "twenty-seven million, two hundred twenty-two thousand, two hundred eighty-nine".