161192271 has 8 divisors (see below), whose sum is σ = 215095680. Its totient is φ = 107375192.

The previous prime is 161192267. The next prime is 161192293. The reversal of 161192271 is 172291161.

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 161192271 - 2² = 161192267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161192201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17091 + ... + 24788.

It is an arithmetic number, because the mean of its divisors is an integer number (26886960).

Almost surely, 2^161192271 is an apocalyptic number.

161192271 is a deficient number, since it is larger than the sum of its proper divisors (53903409).

161192271 is a wasteful number, since it uses less digits than its factorization.

161192271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43165.

The product of its digits is 1512, while the sum is 30.

The square root of 161192271 is about 12696.1518185630. The cubic root of 161192271 is about 544.2286549142.

The spelling of 161192271 in words is "one hundred sixty-one million, one hundred ninety-two thousand, two hundred seventy-one".