161075297 has 4 divisors (see below), whose sum is σ = 161593536. Its totient is φ = 160557060.

The previous prime is 161075273. The next prime is 161075329. The reversal of 161075297 is 792570161.

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.

It is a cyclic number.

It is not a de Polignac number, because 161075297 - 2¹⁰ = 161074273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161075297.

It is not an unprimeable number, because it can be changed into a prime (161075227) 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, 258653 + ... + 259274.

It is an arithmetic number, because the mean of its divisors is an integer number (40398384).

Almost surely, 2^161075297 is an apocalyptic number.

It is an amenable number.

161075297 is a deficient number, since it is larger than the sum of its proper divisors (518239).

161075297 is an equidigital number, since it uses as much as digits as its factorization.

161075297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518238.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 161075297 is about 12691.5443110758. The cubic root of 161075297 is about 544.0969777819.

The spelling of 161075297 in words is "one hundred sixty-one million, seventy-five thousand, two hundred ninety-seven".