1797161 has 2 divisors, whose sum is σ = 1797162. Its totient is φ = 1797160.

The previous prime is 1797109. The next prime is 1797167. The reversal of 1797161 is 1617971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1771561 + 25600 = 1331^2 + 160^2 .

It is an emirp because it is prime and its reverse (1617971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1797161 - 2⁶ = 1797097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1797167) 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, 898580 + 898581.

It is an arithmetic number, because the mean of its divisors is an integer number (898581).

2^1797161 is an apocalyptic number.

It is an amenable number.

1797161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1797161 is an equidigital number, since it uses as much as digits as its factorization.

1797161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646, while the sum is 32.

The square root of 1797161 is about 1340.5823361510. The cubic root of 1797161 is about 121.5800530315.

The spelling of 1797161 in words is "one million, seven hundred ninety-seven thousand, one hundred sixty-one".