97180165 has 4 divisors (see below), whose sum is σ = 116616204. Its totient is φ = 77744128.

The previous prime is 97180157. The next prime is 97180207. The reversal of 97180165 is 56108179.

It is a Cunningham number, because it is equal to 9858²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56108179 = 1709 ⋅32831.

It can be written as a sum of positive squares in 2 ways, for example, as 34975396 + 62204769 = 5914^2 + 7887^2 .

It is a cyclic number.

It is not a de Polignac number, because 97180165 - 2³ = 97180157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9718012 + ... + 9718021.

It is an arithmetic number, because the mean of its divisors is an integer number (29154051).

Almost surely, 2^97180165 is an apocalyptic number.

It is an amenable number.

97180165 is a deficient number, since it is larger than the sum of its proper divisors (19436039).

97180165 is a wasteful number, since it uses less digits than its factorization.

97180165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19436038.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 97180165 is about 9858.0000507202. Note that the first 4 decimals coincide. The cubic root of 97180165 is about 459.7543821077.

The spelling of 97180165 in words is "ninety-seven million, one hundred eighty thousand, one hundred sixty-five".