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161201 is a prime number
BaseRepresentation
bin100111010110110001
322012010102
4213112301
520124301
63242145
71240655
oct472661
9265112
10161201
11100127
1279355
13584b1
1442a65
1532b6b
hex275b1

161201 has 2 divisors, whose sum is σ = 161202. Its totient is φ = 161200.

The previous prime is 161167. The next prime is 161221. The reversal of 161201 is 102161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160801 + 400 = 401^2 + 20^2 .

It is an emirp because it is prime and its reverse (102161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161201 - 26 = 161137 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (161221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80600 + 80601.

It is an arithmetic number, because the mean of its divisors is an integer number (80601).

2161201 is an apocalyptic number.

It is an amenable number.

161201 is a deficient number, since it is larger than the sum of its proper divisors (1).

161201 is an equidigital number, since it uses as much as digits as its factorization.

161201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 161201 is about 401.4984433345. The cubic root of 161201 is about 54.4238478558.

Adding to 161201 its reverse (102161), we get a palindrome (263362).

The spelling of 161201 in words is "one hundred sixty-one thousand, two hundred one".