Base | Representation |
---|---|
bin | 111001010101… |
… | …1001111100101 |
3 | 2002120021200102 |
4 | 1302223033211 |
5 | 30143432131 |
6 | 2552153445 |
7 | 513342656 |
oct | 162531745 |
9 | 62507612 |
10 | 30061541 |
11 | 15a72754 |
12 | a098885 |
13 | 62c6cc3 |
14 | 3dc752d |
15 | 298c1cb |
hex | 1cab3e5 |
30061541 has 2 divisors, whose sum is σ = 30061542. Its totient is φ = 30061540.
The previous prime is 30061523. The next prime is 30061567. The reversal of 30061541 is 14516003.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 17430625 + 12630916 = 4175^2 + 3554^2 .
It is an emirp because it is prime and its reverse (14516003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30061541 - 214 = 30045157 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30061841) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15030770 + 15030771.
It is an arithmetic number, because the mean of its divisors is an integer number (15030771).
Almost surely, 230061541 is an apocalyptic number.
It is an amenable number.
30061541 is a deficient number, since it is larger than the sum of its proper divisors (1).
30061541 is an equidigital number, since it uses as much as digits as its factorization.
30061541 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 360, while the sum is 20.
The square root of 30061541 is about 5482.8405958955. The cubic root of 30061541 is about 310.9355745830.
Adding to 30061541 its reverse (14516003), we get a palindrome (44577544).
The spelling of 30061541 in words is "thirty million, sixty-one thousand, five hundred forty-one".
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