27297997 has 2 divisors, whose sum is σ = 27297998. Its totient is φ = 27297996.

The previous prime is 27297989. The next prime is 27298043. The reversal of 27297997 is 79979272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26275876 + 1022121 = 5126^2 + 1011^2 .

It is a cyclic number.

It is not a de Polignac number, because 27297997 - 2³ = 27297989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27297917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13648998 + 13648999.

It is an arithmetic number, because the mean of its divisors is an integer number (13648999).

Almost surely, 2^27297997 is an apocalyptic number.

It is an amenable number.

27297997 is a deficient number, since it is larger than the sum of its proper divisors (1).

27297997 is an equidigital number, since it uses as much as digits as its factorization.

27297997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000188, while the sum is 52.

The square root of 27297997 is about 5224.7485106941. The cubic root of 27297997 is about 301.0996568503.

The spelling of 27297997 in words is "twenty-seven million, two hundred ninety-seven thousand, nine hundred ninety-seven".