1397161 has 2 divisors, whose sum is σ = 1397162. Its totient is φ = 1397160.

The previous prime is 1397159. The next prime is 1397167. The reversal of 1397161 is 1617931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392400 + 4761 = 1180^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397161 - 2¹ = 1397159 is a prime.

Together with 1397159, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1397167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698580 + 698581.

It is an arithmetic number, because the mean of its divisors is an integer number (698581).

2^1397161 is an apocalyptic number.

It is an amenable number.

1397161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397161 is an equidigital number, since it uses as much as digits as its factorization.

1397161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 28.

The square root of 1397161 is about 1182.0156513346. The cubic root of 1397161 is about 111.7932249909.

The spelling of 1397161 in words is "one million, three hundred ninety-seven thousand, one hundred sixty-one".