27306121 has 2 divisors, whose sum is σ = 27306122. Its totient is φ = 27306120.

The previous prime is 27306119. The next prime is 27306137. The reversal of 27306121 is 12160372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26988025 + 318096 = 5195^2 + 564^2 .

It is a cyclic number.

It is not a de Polignac number, because 27306121 - 2¹ = 27306119 is a prime.

Together with 27306119, it forms a pair of twin primes.

It is equal to p_1700932 and since 27306121 and 1700932 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 27306092 and 27306101.

It is not a weakly prime, because it can be changed into another prime (27306151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13653060 + 13653061.

It is an arithmetic number, because the mean of its divisors is an integer number (13653061).

Almost surely, 2^27306121 is an apocalyptic number.

It is an amenable number.

27306121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27306121 is an equidigital number, since it uses as much as digits as its factorization.

27306121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 27306121 is about 5225.5259065476. The cubic root of 27306121 is about 301.1295234005.

Adding to 27306121 its reverse (12160372), we get a palindrome (39466493).

The spelling of 27306121 in words is "twenty-seven million, three hundred six thousand, one hundred twenty-one".