161105417 has 8 divisors (see below), whose sum is σ = 175906080. Its totient is φ = 146330560.

The previous prime is 161105387. The next prime is 161105429. The reversal of 161105417 is 714501161.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161105417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161105467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8033 + ... + 19665.

It is an arithmetic number, because the mean of its divisors is an integer number (21988260).

Almost surely, 2^161105417 is an apocalyptic number.

It is an amenable number.

161105417 is a deficient number, since it is larger than the sum of its proper divisors (14800663).

161105417 is a wasteful number, since it uses less digits than its factorization.

161105417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12903.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 161105417 is about 12692.7308724325. The cubic root of 161105417 is about 544.1308898299.

Adding to 161105417 its reverse (714501161), we get a palindrome (875606578).

The spelling of 161105417 in words is "one hundred sixty-one million, one hundred five thousand, four hundred seventeen".