Base | Representation |
---|---|
bin | 11001011101101… |
… | …110001001100001 |
3 | 1002202220002212021 |
4 | 121131232021201 |
5 | 1333332042401 |
6 | 110220501441 |
7 | 13405216012 |
oct | 3135561141 |
9 | 1082802767 |
10 | 427221601 |
11 | 1aa178a04 |
12 | bb0aa881 |
13 | 6a682a61 |
14 | 40a4d009 |
15 | 2778e2a1 |
hex | 1976e261 |
427221601 has 2 divisors, whose sum is σ = 427221602. Its totient is φ = 427221600.
The previous prime is 427221589. The next prime is 427221653. The reversal of 427221601 is 106122724.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 360962001 + 66259600 = 18999^2 + 8140^2 .
It is a cyclic number.
It is not a de Polignac number, because 427221601 - 29 = 427221089 is a prime.
It is a super-2 number, since 2×4272216012 = 365036592722006402, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (427221661) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213610800 + 213610801.
It is an arithmetic number, because the mean of its divisors is an integer number (213610801).
Almost surely, 2427221601 is an apocalyptic number.
It is an amenable number.
427221601 is a deficient number, since it is larger than the sum of its proper divisors (1).
427221601 is an equidigital number, since it uses as much as digits as its factorization.
427221601 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1344, while the sum is 25.
The square root of 427221601 is about 20669.3396362825. The cubic root of 427221601 is about 753.1550649568.
The spelling of 427221601 in words is "four hundred twenty-seven million, two hundred twenty-one thousand, six hundred one".
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