27331147 has 2 divisors, whose sum is σ = 27331148. Its totient is φ = 27331146.

The previous prime is 27331097. The next prime is 27331169. The reversal of 27331147 is 74113372.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27331147 is a prime.

It is not a weakly prime, because it can be changed into another prime (27331547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13665573 + 13665574.

It is an arithmetic number, because the mean of its divisors is an integer number (13665574).

Almost surely, 2^27331147 is an apocalyptic number.

27331147 is a deficient number, since it is larger than the sum of its proper divisors (1).

27331147 is an equidigital number, since it uses as much as digits as its factorization.

27331147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 28.

The square root of 27331147 is about 5227.9199496549. The cubic root of 27331147 is about 301.2214901596.

The spelling of 27331147 in words is "twenty-seven million, three hundred thirty-one thousand, one hundred forty-seven".