27293197 has 2 divisors, whose sum is σ = 27293198. Its totient is φ = 27293196.

The previous prime is 27293191. The next prime is 27293207. The reversal of 27293197 is 79139272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22857961 + 4435236 = 4781^2 + 2106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27293197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27293191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13646598 + 13646599.

It is an arithmetic number, because the mean of its divisors is an integer number (13646599).

Almost surely, 2^27293197 is an apocalyptic number.

27293197 is the 2793-rd centered heptagonal number.

It is an amenable number.

27293197 is a deficient number, since it is larger than the sum of its proper divisors (1).

27293197 is an equidigital number, since it uses as much as digits as its factorization.

27293197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 40.

The square root of 27293197 is about 5224.2891382465. The cubic root of 27293197 is about 301.0820076546.

The spelling of 27293197 in words is "twenty-seven million, two hundred ninety-three thousand, one hundred ninety-seven".