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104205181 is a prime number
BaseRepresentation
bin1100011011000…
…00101101111101
321021002011122011
412031200231331
5203134031211
614201251221
72403505123
oct615405575
9237064564
10104205181
1153903993
122aa93b11
1318786892
14dba7913
159235921
hex6360b7d

104205181 has 2 divisors, whose sum is σ = 104205182. Its totient is φ = 104205180.

The previous prime is 104205169. The next prime is 104205217. The reversal of 104205181 is 181502401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88924900 + 15280281 = 9430^2 + 3909^2 .

It is an emirp because it is prime and its reverse (181502401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104205181 - 29 = 104204669 is a prime.

It is a super-2 number, since 2×1042051812 = 21717439494485522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104205131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52102590 + 52102591.

It is an arithmetic number, because the mean of its divisors is an integer number (52102591).

Almost surely, 2104205181 is an apocalyptic number.

It is an amenable number.

104205181 is a deficient number, since it is larger than the sum of its proper divisors (1).

104205181 is an equidigital number, since it uses as much as digits as its factorization.

104205181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 104205181 is about 10208.0938965117. The cubic root of 104205181 is about 470.5759966955.

Adding to 104205181 its reverse (181502401), we get a palindrome (285707582).

The spelling of 104205181 in words is "one hundred four million, two hundred five thousand, one hundred eighty-one".