Search a number
-
+
205054103241 = 321321726832
BaseRepresentation
bin1011111011111000101…
…1010100111011001001
3201121021120110201202100
42332332023110323021
511324422322300431
6234111153024013
720546301055611
oct2767613247311
9647246421670
10205054103241
1179a65771829
12338a8255009
131644b441a00
149cd3427a41
1555020164e6
hex2fbe2d4ec9

205054103241 has 81 divisors (see below), whose sum is σ = 341201202069. Its totient is φ = 118590481152.

The previous prime is 205054103227. The next prime is 205054103269. The reversal of 205054103241 is 142301450502.

The square root of 205054103241 is 452829.

It is a perfect power (a square), and thus also a powerful number.

205054103241 is a `hidden beast` number, since 2 + 0 + 5 + 0 + 5 + 410 + 3 + 241 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1851494841 + 203202608400 = 43029^2 + 450780^2 .

It is not a de Polignac number, because 205054103241 - 25 = 205054103209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205054103291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 300225286 + ... + 300225968.

Almost surely, 2205054103241 is an apocalyptic number.

205054103241 is the 452829-th square number.

205054103241 is the 226415-th centered octagonal number.

It is an amenable number.

205054103241 is a deficient number, since it is larger than the sum of its proper divisors (136147098828).

205054103241 is an equidigital number, since it uses as much as digits as its factorization.

205054103241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 205054103241 its reverse (142301450502), we get a palindrome (347355553743).

The spelling of 205054103241 in words is "two hundred five billion, fifty-four million, one hundred three thousand, two hundred forty-one".

Divisors: 1 3 9 13 17 39 51 117 153 169 221 289 507 663 683 867 1521 1989 2049 2601 2873 3757 6147 8619 8879 11271 11611 25857 26637 33813 34833 48841 79911 104499 115427 146523 150943 197387 346281 439569 452829 466489 592161 1038843 1358487 1399467 1776483 1962259 2566031 4198401 5886777 6064357 7698093 7930313 17660331 18193071 23094279 23790939 33358403 54579213 71372817 78836641 100075209 103094069 134815321 236509923 300225627 309282207 404445963 709529769 927846621 1213337889 1340222897 1752599173 4020668691 5257797519 12062006073 15773392557 22783789249 68351367747 205054103241