161065301 has 4 divisors (see below), whose sum is σ = 161249004. Its totient is φ = 160881600.

The previous prime is 161065213. The next prime is 161065313. The reversal of 161065301 is 103560161.

It is a happy number.

161065301 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 can be written as a sum of positive squares in 2 ways, for example, as 44209201 + 116856100 = 6649^2 + 10810^2 .

It is a cyclic number.

It is not a de Polignac number, because 161065301 - 2²⁶ = 93956437 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 (161065601) 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, 90530 + ... + 92291.

It is an arithmetic number, because the mean of its divisors is an integer number (40312251).

Almost surely, 2^161065301 is an apocalyptic number.

It is an amenable number.

161065301 is a deficient number, since it is larger than the sum of its proper divisors (183703).

161065301 is an equidigital number, since it uses as much as digits as its factorization.

161065301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183702.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 161065301 is about 12691.1504994622. The cubic root of 161065301 is about 544.0857223712.

The spelling of 161065301 in words is "one hundred sixty-one million, sixty-five thousand, three hundred one".