Base | Representation |
---|---|
bin | 110010111101100100… |
… | …011100111111000111 |
3 | 12020020112102220222102 |
4 | 302331210130333013 |
5 | 1344031313313122 |
6 | 41045452422315 |
7 | 3645004545500 |
oct | 627544347707 |
9 | 166215386872 |
10 | 54720057287 |
11 | 21230055a45 |
12 | a73177799b |
13 | 521090402c |
14 | 291155dba7 |
15 | 1653e50492 |
hex | cbd91cfc7 |
54720057287 has 12 divisors (see below), whose sum is σ = 64459694880. Its totient is φ = 46309195296.
The previous prime is 54720057277. The next prime is 54720057397. The reversal of 54720057287 is 78275002745.
It is not a de Polignac number, because 54720057287 - 28 = 54720057031 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (54720057277) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7064078 + ... + 7071819.
It is an arithmetic number, because the mean of its divisors is an integer number (5371641240).
Almost surely, 254720057287 is an apocalyptic number.
54720057287 is a deficient number, since it is larger than the sum of its proper divisors (9739637593).
54720057287 is a wasteful number, since it uses less digits than its factorization.
54720057287 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 14135990 (or 14135983 counting only the distinct ones).
The product of its (nonzero) digits is 1097600, while the sum is 47.
The spelling of 54720057287 in words is "fifty-four billion, seven hundred twenty million, fifty-seven thousand, two hundred eighty-seven".
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