161075471 has 4 divisors (see below), whose sum is σ = 161191200. Its totient is φ = 160959744.

The previous prime is 161075461. The next prime is 161075489. The reversal of 161075471 is 174570161.

161075471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161075471 is a prime.

It is a super-3 number, since 3×161075471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161075401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55751 + ... + 58568.

It is an arithmetic number, because the mean of its divisors is an integer number (40297800).

Almost surely, 2^161075471 is an apocalyptic number.

161075471 is a deficient number, since it is larger than the sum of its proper divisors (115729).

161075471 is a wasteful number, since it uses less digits than its factorization.

161075471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115728.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 161075471 is about 12691.5511660317. The cubic root of 161075471 is about 544.0971737003.

The spelling of 161075471 in words is "one hundred sixty-one million, seventy-five thousand, four hundred seventy-one".