Search a number
-
+
168601 is a prime number
BaseRepresentation
bin101001001010011001
322120021111
4221022121
520343401
63340321
71301356
oct511231
9276244
10168601
11105744
12816a1
135b984
144562d
1534e51
hex29299

168601 has 2 divisors, whose sum is σ = 168602. Its totient is φ = 168600.

The previous prime is 168599. The next prime is 168617. The reversal of 168601 is 106861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141376 + 27225 = 376^2 + 165^2 .

It is an emirp because it is prime and its reverse (106861) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 109891 and 198901.

It is a cyclic number.

It is not a de Polignac number, because 168601 - 21 = 168599 is a prime.

Together with 168599, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (168631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84300 + 84301.

It is an arithmetic number, because the mean of its divisors is an integer number (84301).

2168601 is an apocalyptic number.

It is an amenable number.

168601 is a deficient number, since it is larger than the sum of its proper divisors (1).

168601 is an equidigital number, since it uses as much as digits as its factorization.

168601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 168601 is about 410.6105210537. The cubic root of 168601 is about 55.2442033735.

It can be divided in two parts, 16860 and 1, that added together give a palindrome (16861).

The spelling of 168601 in words is "one hundred sixty-eight thousand, six hundred one".