161575606 has 4 divisors (see below), whose sum is σ = 242363412. Its totient is φ = 80787802.

The previous prime is 161575591. The next prime is 161575607. The reversal of 161575606 is 606575161.

161575606 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 super-2 number, since 2×161575606² = 52213352908534472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161575607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40393900 + ... + 40393903.

It is an arithmetic number, because the mean of its divisors is an integer number (60590853).

Almost surely, 2^161575606 is an apocalyptic number.

161575606 is a deficient number, since it is larger than the sum of its proper divisors (80787806).

161575606 is an equidigital number, since it uses as much as digits as its factorization.

161575606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80787805.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 161575606 is about 12711.2393573562. The cubic root of 161575606 is about 544.6597275542.

The spelling of 161575606 in words is "one hundred sixty-one million, five hundred seventy-five thousand, six hundred six".