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161141 is a prime number
BaseRepresentation
bin100111010101110101
322012001012
4213111311
520124031
63242005
71240541
oct472565
9265035
10161141
11100082
1279305
1358466
1442a21
1532b2b
hex27575

161141 has 2 divisors, whose sum is σ = 161142. Its totient is φ = 161140.

The previous prime is 161137. The next prime is 161149. The reversal of 161141 is 141161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108241 + 52900 = 329^2 + 230^2 .

It is an emirp because it is prime and its reverse (141161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161141 - 22 = 161137 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80570 + 80571.

It is an arithmetic number, because the mean of its divisors is an integer number (80571).

2161141 is an apocalyptic number.

It is an amenable number.

161141 is a deficient number, since it is larger than the sum of its proper divisors (1).

161141 is an equidigital number, since it uses as much as digits as its factorization.

161141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 14.

The square root of 161141 is about 401.4237162899. The cubic root of 161141 is about 54.4170947213.

The spelling of 161141 in words is "one hundred sixty-one thousand, one hundred forty-one".