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161075 = 5217379
BaseRepresentation
bin100111010100110011
322011221202
4213110303
520123300
63241415
71240415
oct472463
9264852
10161075
11100022
127926b
1358415
14429b5
1532ad5
hex27533

161075 has 12 divisors (see below), whose sum is σ = 212040. Its totient is φ = 120960.

The previous prime is 161071. The next prime is 161087. The reversal of 161075 is 570161.

It is not a de Polignac number, because 161075 - 22 = 161071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236 + ... + 614.

It is an arithmetic number, because the mean of its divisors is an integer number (17670).

2161075 is an apocalyptic number.

161075 is a deficient number, since it is larger than the sum of its proper divisors (50965).

161075 is a wasteful number, since it uses less digits than its factorization.

161075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 161075 is about 401.3415004706. The cubic root of 161075 is about 54.4096643369.

The spelling of 161075 in words is "one hundred sixty-one thousand, seventy-five".

Divisors: 1 5 17 25 85 379 425 1895 6443 9475 32215 161075