Search a number
161107 = 315197
BaseRepresentation
bin100111010101010011
322011222221
4213111103
520123412
63241511
71240462
oct472523
9264887
10161107
11100051
1279297
135843b
14429d9
1532b07
hex27553

161107 has 4 divisors (see below), whose sum is σ = 166336. Its totient is φ = 155880.

The previous prime is 161093. The next prime is 161123. The reversal of 161107 is 701161.

Adding to 161107 its reverse (701161), we get a palindrome (862268).

161107 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701161 = 1913671.

It is a cyclic number.

It is not a de Polignac number, because 161107 - 211 = 159059 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (41584).

2161107 is an apocalyptic number.

161107 is a deficient number, since it is larger than the sum of its proper divisors (5229).

161107 is an equidigital number, since it uses as much as digits as its factorization.

161107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 161107 is about 401.3813647891. The cubic root of 161107 is about 54.4132672010.

The spelling of 161107 in words is "one hundred sixty-one thousand, one hundred seven".

Divisors: 1 31 5197 161107