Base | Representation |
---|---|
bin | 11011110001101000110001 |
3 | 111200220221010 |
4 | 123301220301 |
5 | 3330444301 |
6 | 420021133 |
7 | 115613664 |
oct | 33615061 |
9 | 14626833 |
10 | 7281201 |
11 | 4123524 |
12 | 25317a9 |
13 | 167c205 |
14 | d776db |
15 | 98c5d6 |
hex | 6f1a31 |
7281201 has 4 divisors (see below), whose sum is σ = 9708272. Its totient is φ = 4854132.
The previous prime is 7281181. The next prime is 7281203. The reversal of 7281201 is 1021827.
7281201 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is not a de Polignac number, because 7281201 - 218 = 7019057 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (7281203) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213531 + ... + 1213536.
It is an arithmetic number, because the mean of its divisors is an integer number (2427068).
Almost surely, 27281201 is an apocalyptic number.
It is an amenable number.
7281201 is a deficient number, since it is larger than the sum of its proper divisors (2427071).
7281201 is a wasteful number, since it uses less digits than its factorization.
7281201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2427070.
The product of its (nonzero) digits is 224, while the sum is 21.
The square root of 7281201 is about 2698.3700635754. The cubic root of 7281201 is about 193.8210788810.
The spelling of 7281201 in words is "seven million, two hundred eighty-one thousand, two hundred one".
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