161206301 has 4 divisors (see below), whose sum is σ = 165138204. Its totient is φ = 157274400.

The previous prime is 161206277. The next prime is 161206303. The reversal of 161206301 is 103602161.

161206301 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, and also an emirpimes, since its reverse is a distinct semiprime: 103602161 = 13 ⋅7969397.

It can be written as a sum of positive squares in 2 ways, for example, as 22791076 + 138415225 = 4774^2 + 11765^2 .

It is a cyclic number.

It is not a de Polignac number, because 161206301 - 2⁶ = 161206237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161206303) 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, 1965890 + ... + 1965971.

It is an arithmetic number, because the mean of its divisors is an integer number (41284551).

Almost surely, 2^161206301 is an apocalyptic number.

It is an amenable number.

161206301 is a deficient number, since it is larger than the sum of its proper divisors (3931903).

161206301 is an equidigital number, since it uses as much as digits as its factorization.

161206301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931902.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 161206301 is about 12696.7043361653. The cubic root of 161206301 is about 544.2444441463.

Adding to 161206301 its reverse (103602161), we get a palindrome (264808462).

The spelling of 161206301 in words is "one hundred sixty-one million, two hundred six thousand, three hundred one".