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161006 = 2192223
BaseRepresentation
bin100111010011101110
322011212012
4213103232
520123011
63241222
71240256
oct472356
9264765
10161006
11aaa6a
1279212
1358391
1442966
1532a8b
hex274ee

161006 has 12 divisors (see below), whose sum is σ = 256032. Its totient is φ = 75924.

The previous prime is 160997. The next prime is 161009. The reversal of 161006 is 600161.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161009) 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 in 5 ways as a sum of consecutive naturals, for example, 611 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (21336).

2161006 is an apocalyptic number.

161006 is a deficient number, since it is larger than the sum of its proper divisors (95026).

161006 is a wasteful number, since it uses less digits than its factorization.

161006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 161006 is about 401.2555295569. The cubic root of 161006 is about 54.4018940373.

Adding to 161006 its reverse (600161), we get a palindrome (761167).

The spelling of 161006 in words is "one hundred sixty-one thousand, six".

Divisors: 1 2 19 38 223 361 446 722 4237 8474 80503 161006