Search a number
-
+
805550105 = 5161110021
BaseRepresentation
bin110000000000111…
…011100000011001
32002010210012000002
4300000323200121
53122210100410
6211533422345
725651030403
oct6000734031
92063705002
10805550105
11383791798
121a593a9b5
13cab77189
1478db1b73
154aac17a5
hex3003b819

805550105 has 4 divisors (see below), whose sum is σ = 966660132. Its totient is φ = 644440080.

The previous prime is 805550099. The next prime is 805550111. The reversal of 805550105 is 501055508.

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

It is an interprime number because it is at equal distance from previous prime (805550099) and next prime (805550111).

It can be written as a sum of positive squares in 2 ways, for example, as 462078016 + 343472089 = 21496^2 + 18533^2 .

It is not a de Polignac number, because 805550105 - 212 = 805546009 is a prime.

It is a super-2 number, since 2×8055501052 = 1297821943331022050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 80555006 + ... + 80555015.

It is an arithmetic number, because the mean of its divisors is an integer number (241665033).

Almost surely, 2805550105 is an apocalyptic number.

It is an amenable number.

805550105 is a deficient number, since it is larger than the sum of its proper divisors (161110027).

805550105 is a wasteful number, since it uses less digits than its factorization.

805550105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161110026.

The product of its (nonzero) digits is 5000, while the sum is 29.

The square root of 805550105 is about 28382.2145894220. The cubic root of 805550105 is about 930.4595967062.

The spelling of 805550105 in words is "eight hundred five million, five hundred fifty thousand, one hundred five".

Divisors: 1 5 161110021 805550105