27423257 has 2 divisors, whose sum is σ = 27423258. Its totient is φ = 27423256.

The previous prime is 27423223. The next prime is 27423269. The reversal of 27423257 is 75232472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22477081 + 4946176 = 4741^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 27423257 - 2⁸ = 27423001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27423287) 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, 13711628 + 13711629.

It is an arithmetic number, because the mean of its divisors is an integer number (13711629).

Almost surely, 2^27423257 is an apocalyptic number.

It is an amenable number.

27423257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27423257 is an equidigital number, since it uses as much as digits as its factorization.

27423257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 32.

The square root of 27423257 is about 5236.7219708516. The cubic root of 27423257 is about 301.5594976944.

The spelling of 27423257 in words is "twenty-seven million, four hundred twenty-three thousand, two hundred fifty-seven".