Base | Representation |
---|---|
bin | 1101000100100… |
… | …0000101011101 |
3 | 10211011012120022 |
4 | 3101020011131 |
5 | 103013234323 |
6 | 5235001525 |
7 | 1233654416 |
oct | 321100535 |
9 | 124135508 |
10 | 54821213 |
11 | 28a43a97 |
12 | 164392a5 |
13 | b4859b5 |
14 | 73d080d |
15 | 4c2d4c8 |
hex | 344815d |
54821213 has 16 divisors (see below), whose sum is σ = 60556800. Its totient is φ = 49397040.
The previous prime is 54821191. The next prime is 54821227. The reversal of 54821213 is 31212845.
It is a cyclic number.
It is not a de Polignac number, because 54821213 - 216 = 54755677 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (54821233) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144458 + ... + 144836.
It is an arithmetic number, because the mean of its divisors is an integer number (3784800).
Almost surely, 254821213 is an apocalyptic number.
It is an amenable number.
54821213 is a deficient number, since it is larger than the sum of its proper divisors (5735587).
54821213 is a wasteful number, since it uses less digits than its factorization.
54821213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 752.
The product of its digits is 1920, while the sum is 26.
The square root of 54821213 is about 7404.1348583072. The cubic root of 54821213 is about 379.8827269696.
The spelling of 54821213 in words is "fifty-four million, eight hundred twenty-one thousand, two hundred thirteen".
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