161200297 has 2 divisors, whose sum is σ = 161200298. Its totient is φ = 161200296.

The previous prime is 161200223. The next prime is 161200337. The reversal of 161200297 is 792002161.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161188416 + 11881 = 12696^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 161200297 - 2¹¹ = 161198249 is a prime.

It is not a weakly prime, because it can be changed into another prime (161200597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80600148 + 80600149.

It is an arithmetic number, because the mean of its divisors is an integer number (80600149).

Almost surely, 2^161200297 is an apocalyptic number.

It is an amenable number.

161200297 is a deficient number, since it is larger than the sum of its proper divisors (1).

161200297 is an equidigital number, since it uses as much as digits as its factorization.

161200297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 161200297 is about 12696.4678946548. The cubic root of 161200297 is about 544.2376874124.

The spelling of 161200297 in words is "one hundred sixty-one million, two hundred thousand, two hundred ninety-seven".