161392097 has 2 divisors, whose sum is σ = 161392098. Its totient is φ = 161392096.

The previous prime is 161392087. The next prime is 161392139. The reversal of 161392097 is 790293161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158860816 + 2531281 = 12604^2 + 1591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161392097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161392097.

It is not a weakly prime, because it can be changed into another prime (161392037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80696048 + 80696049.

It is an arithmetic number, because the mean of its divisors is an integer number (80696049).

Almost surely, 2^161392097 is an apocalyptic number.

It is an amenable number.

161392097 is a deficient number, since it is larger than the sum of its proper divisors (1).

161392097 is an equidigital number, since it uses as much as digits as its factorization.

161392097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 161392097 is about 12704.0189310312. The cubic root of 161392097 is about 544.4534509023.

The spelling of 161392097 in words is "one hundred sixty-one million, three hundred ninety-two thousand, ninety-seven".