Base | Representation |
---|---|
bin | 11111100110011… |
… | …110110010100001 |
3 | 1100221121222222202 |
4 | 133212132302201 |
5 | 2041211300111 |
6 | 124335342545 |
7 | 16065316010 |
oct | 3746366241 |
9 | 1327558882 |
10 | 530181281 |
11 | 252301053 |
12 | 129681a55 |
13 | 85ac1746 |
14 | 505b0a77 |
15 | 3182ab3b |
hex | 1f99eca1 |
530181281 has 8 divisors (see below), whose sum is σ = 606061824. Its totient is φ = 454335840.
The previous prime is 530181259. The next prime is 530181287. The reversal of 530181281 is 182181035.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 530181281 - 226 = 463072417 is a prime.
It is a super-2 number, since 2×5301812812 = 562184381445601922, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (530181287) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48776 + ... + 58646.
It is an arithmetic number, because the mean of its divisors is an integer number (75757728).
Almost surely, 2530181281 is an apocalyptic number.
It is an amenable number.
530181281 is a deficient number, since it is larger than the sum of its proper divisors (75880543).
530181281 is an equidigital number, since it uses as much as digits as its factorization.
530181281 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 17551.
The product of its (nonzero) digits is 1920, while the sum is 29.
The square root of 530181281 is about 23025.6657015601. The cubic root of 530181281 is about 809.3594900920.
The spelling of 530181281 in words is "five hundred thirty million, one hundred eighty-one thousand, two hundred eighty-one".
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