27305897 has 2 divisors, whose sum is σ = 27305898. Its totient is φ = 27305896.

The previous prime is 27305879. The next prime is 27305909. The reversal of 27305897 is 79850372.

Together with previous prime (27305879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20394256 + 6911641 = 4516^2 + 2629^2 .

It is a cyclic number.

It is not a de Polignac number, because 27305897 - 2¹² = 27301801 is a prime.

It is a super-2 number, since 2×27305897² = 1491224021949218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27305827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13652948 + 13652949.

It is an arithmetic number, because the mean of its divisors is an integer number (13652949).

Almost surely, 2^27305897 is an apocalyptic number.

It is an amenable number.

27305897 is a deficient number, since it is larger than the sum of its proper divisors (1).

27305897 is an equidigital number, since it uses as much as digits as its factorization.

27305897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 27305897 is about 5225.5044732542. The cubic root of 27305897 is about 301.1286999807.

The spelling of 27305897 in words is "twenty-seven million, three hundred five thousand, eight hundred ninety-seven".