161165417 has 8 divisors (see below), whose sum is σ = 184632000. Its totient is φ = 137809584.

The previous prime is 161165363. The next prime is 161165437. The reversal of 161165417 is 714561161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161165417 - 2¹⁸ = 160903273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161165437) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24542 + ... + 30407.

It is an arithmetic number, because the mean of its divisors is an integer number (23079000).

Almost surely, 2^161165417 is an apocalyptic number.

It is an amenable number.

161165417 is a deficient number, since it is larger than the sum of its proper divisors (23466583).

161165417 is an equidigital number, since it uses as much as digits as its factorization.

161165417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55375.

The product of its digits is 5040, while the sum is 32.

The square root of 161165417 is about 12695.0942099695. The cubic root of 161165417 is about 544.1984311161.

The spelling of 161165417 in words is "one hundred sixty-one million, one hundred sixty-five thousand, four hundred seventeen".