Base | Representation |
---|---|
bin | 1101010001000… |
… | …0000000111000 |
3 | 10212200210220012 |
4 | 3110100000320 |
5 | 103220440440 |
6 | 5304321052 |
7 | 1243635044 |
oct | 324200070 |
9 | 125623805 |
10 | 55640120 |
11 | 29453278 |
12 | 16773188 |
13 | b6b1663 |
14 | 7565024 |
15 | 4d40e65 |
hex | 3510038 |
55640120 has 32 divisors (see below), whose sum is σ = 125489520. Its totient is φ = 22202880.
The previous prime is 55640111. The next prime is 55640131. The reversal of 55640120 is 2104655.
It is a super-2 number, since 2×556401202 = 6191645907228800, which contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18224 + ... + 21056.
Almost surely, 255640120 is an apocalyptic number.
It is an amenable number.
55640120 is an abundant number, since it is smaller than the sum of its proper divisors (69849400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
55640120 is a wasteful number, since it uses less digits than its factorization.
55640120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3335 (or 3331 counting only the distinct ones).
The product of its (nonzero) digits is 1200, while the sum is 23.
The square root of 55640120 is about 7459.2305233181. The cubic root of 55640120 is about 381.7649202832.
Adding to 55640120 its reverse (2104655), we get a palindrome (57744775).
The spelling of 55640120 in words is "fifty-five million, six hundred forty thousand, one hundred twenty".
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