27493121 has 2 divisors, whose sum is σ = 27493122. Its totient is φ = 27493120.

The previous prime is 27493111. The next prime is 27493139. The reversal of 27493121 is 12139472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 9388096 = 4255^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 27493121 - 2¹⁸ = 27230977 is a prime.

It is equal to p_1711829 and since 27493121 and 1711829 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 (27493111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13746560 + 13746561.

It is an arithmetic number, because the mean of its divisors is an integer number (13746561).

Almost surely, 2^27493121 is an apocalyptic number.

It is an amenable number.

27493121 is a deficient number, since it is larger than the sum of its proper divisors (1).

27493121 is an equidigital number, since it uses as much as digits as its factorization.

27493121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 27493121 is about 5243.3883129137. The cubic root of 27493121 is about 301.8153667283.

The spelling of 27493121 in words is "twenty-seven million, four hundred ninety-three thousand, one hundred twenty-one".