27291293 has 2 divisors, whose sum is σ = 27291294. Its totient is φ = 27291292.

The previous prime is 27291263. The next prime is 27291301. The reversal of 27291293 is 39219272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19123129 + 8168164 = 4373^2 + 2858^2 .

It is a cyclic number.

It is not a de Polignac number, because 27291293 - 2¹⁰ = 27290269 is a prime.

It is a super-2 number, since 2×27291293² = 1489629347223698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27291223) 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, 13645646 + 13645647.

It is an arithmetic number, because the mean of its divisors is an integer number (13645647).

Almost surely, 2^27291293 is an apocalyptic number.

It is an amenable number.

27291293 is a deficient number, since it is larger than the sum of its proper divisors (1).

27291293 is an equidigital number, since it uses as much as digits as its factorization.

27291293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 27291293 is about 5224.1069093195. The cubic root of 27291293 is about 301.0750062338.

The spelling of 27291293 in words is "twenty-seven million, two hundred ninety-one thousand, two hundred ninety-three".