Base | Representation |
---|---|
bin | 111001111011… |
… | …1110010010101 |
3 | 2010011012202021 |
4 | 1303313302111 |
5 | 30234000221 |
6 | 3003013141 |
7 | 516120013 |
oct | 163676225 |
9 | 63135667 |
10 | 30375061 |
11 | 16167262 |
12 | a20a1b1 |
13 | 63a6912 |
14 | 40698b3 |
15 | 2a00041 |
hex | 1cf7c95 |
30375061 has 2 divisors, whose sum is σ = 30375062. Its totient is φ = 30375060.
The previous prime is 30375049. The next prime is 30375083. The reversal of 30375061 is 16057303.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 28143025 + 2232036 = 5305^2 + 1494^2 .
It is a cyclic number.
It is not a de Polignac number, because 30375061 - 217 = 30243989 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30375001) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15187530 + 15187531.
It is an arithmetic number, because the mean of its divisors is an integer number (15187531).
Almost surely, 230375061 is an apocalyptic number.
It is an amenable number.
30375061 is a deficient number, since it is larger than the sum of its proper divisors (1).
30375061 is an equidigital number, since it uses as much as digits as its factorization.
30375061 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1890, while the sum is 25.
The square root of 30375061 is about 5511.3574552918. The cubic root of 30375061 is about 312.0127823220.
The spelling of 30375061 in words is "thirty million, three hundred seventy-five thousand, sixty-one".
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