161159041 has 4 divisors (see below), whose sum is σ = 161220784. Its totient is φ = 161097300.

The previous prime is 161159039. The next prime is 161159051. The reversal of 161159041 is 140951161.

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 161159041 - 2¹ = 161159039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161159021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26775 + ... + 32236.

It is an arithmetic number, because the mean of its divisors is an integer number (40305196).

Almost surely, 2^161159041 is an apocalyptic number.

It is an amenable number.

161159041 is a deficient number, since it is larger than the sum of its proper divisors (61743).

161159041 is an equidigital number, since it uses as much as digits as its factorization.

161159041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61742.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 161159041 is about 12694.8430868601. The cubic root of 161159041 is about 544.1912545249.

The spelling of 161159041 in words is "one hundred sixty-one million, one hundred fifty-nine thousand, forty-one".