161125841 has 2 divisors, whose sum is σ = 161125842. Its totient is φ = 161125840.

The previous prime is 161125831. The next prime is 161125849. The reversal of 161125841 is 148521161.

161125841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158860816 + 2265025 = 12604^2 + 1505^2 .

It is an emirp because it is prime and its reverse (148521161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161125841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161125849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80562920 + 80562921.

It is an arithmetic number, because the mean of its divisors is an integer number (80562921).

Almost surely, 2^161125841 is an apocalyptic number.

It is an amenable number.

161125841 is a deficient number, since it is larger than the sum of its proper divisors (1).

161125841 is an equidigital number, since it uses as much as digits as its factorization.

161125841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 29.

The square root of 161125841 is about 12693.5354019280. The cubic root of 161125841 is about 544.1538827660.

The spelling of 161125841 in words is "one hundred sixty-one million, one hundred twenty-five thousand, eight hundred forty-one".