27622121 has 2 divisors, whose sum is σ = 27622122. Its totient is φ = 27622120.

The previous prime is 27622097. The next prime is 27622139. The reversal of 27622121 is 12122672.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24364096 + 3258025 = 4936^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 27622121 - 2¹⁸ = 27359977 is a prime.

It is a Chen prime.

It is equal to p_1719401 and since 27622121 and 1719401 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (27622141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13811060 + 13811061.

It is an arithmetic number, because the mean of its divisors is an integer number (13811061).

Almost surely, 2^27622121 is an apocalyptic number.

It is an amenable number.

27622121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27622121 is an equidigital number, since it uses as much as digits as its factorization.

27622121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 27622121 is about 5255.6751231407. The cubic root of 27622121 is about 302.2866779145.

Adding to 27622121 its reverse (12122672), we get a palindrome (39744793).

The spelling of 27622121 in words is "twenty-seven million, six hundred twenty-two thousand, one hundred twenty-one".