161374417 has 4 divisors (see below), whose sum is σ = 168390720. Its totient is φ = 154358116.

The previous prime is 161374403. The next prime is 161374471. The reversal of 161374417 is 714473161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 714473161 = 17 ⋅42027833.

It is a cyclic number.

It is not a de Polignac number, because 161374417 - 2⁷ = 161374289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161374817) 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 3 ways as a sum of consecutive naturals, for example, 3508117 + ... + 3508162.

It is an arithmetic number, because the mean of its divisors is an integer number (42097680).

Almost surely, 2^161374417 is an apocalyptic number.

It is an amenable number.

161374417 is a deficient number, since it is larger than the sum of its proper divisors (7016303).

161374417 is an equidigital number, since it uses as much as digits as its factorization.

161374417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7016302.

The product of its digits is 14112, while the sum is 34.

The square root of 161374417 is about 12703.3230691815. The cubic root of 161374417 is about 544.4335691181.

The spelling of 161374417 in words is "one hundred sixty-one million, three hundred seventy-four thousand, four hundred seventeen".