165841097 has 2 divisors, whose sum is σ = 165841098. Its totient is φ = 165841096.

The previous prime is 165841057. The next prime is 165841121. The reversal of 165841097 is 790148561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154355776 + 11485321 = 12424^2 + 3389^2 .

It is an emirp because it is prime and its reverse (790148561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165841097 - 2⁸ = 165840841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165841007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82920548 + 82920549.

It is an arithmetic number, because the mean of its divisors is an integer number (82920549).

Almost surely, 2^165841097 is an apocalyptic number.

It is an amenable number.

165841097 is a deficient number, since it is larger than the sum of its proper divisors (1).

165841097 is an equidigital number, since it uses as much as digits as its factorization.

165841097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 165841097 is about 12877.9306179215. The cubic root of 165841097 is about 549.4110466946.

The spelling of 165841097 in words is "one hundred sixty-five million, eight hundred forty-one thousand, ninety-seven".