Search a number
-
+
105683161 = 509207629
BaseRepresentation
bin1100100110010…
…01100011011001
321100212021001011
412103021203121
5204023330121
614253053521
72422202113
oct623114331
9240767034
10105683161
1154723361
122b4872a1
1318b8351c
14100703b3
1594287e1
hex64c98d9

105683161 has 4 divisors (see below), whose sum is σ = 105891300. Its totient is φ = 105475024.

The previous prime is 105683159. The next prime is 105683173. The reversal of 105683161 is 161386501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86490000 + 19193161 = 9300^2 + 4381^2 .

It is a cyclic number.

It is not a de Polignac number, because 105683161 - 21 = 105683159 is a prime.

It is a super-2 number, since 2×1056831612 = 22337861037903842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105683141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103306 + ... + 104323.

It is an arithmetic number, because the mean of its divisors is an integer number (26472825).

Almost surely, 2105683161 is an apocalyptic number.

It is an amenable number.

105683161 is a deficient number, since it is larger than the sum of its proper divisors (208139).

105683161 is an equidigital number, since it uses as much as digits as its factorization.

105683161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208138.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 105683161 is about 10280.2315635398. The cubic root of 105683161 is about 472.7903440266.

The spelling of 105683161 in words is "one hundred five million, six hundred eighty-three thousand, one hundred sixty-one".

Divisors: 1 509 207629 105683161