Base | Representation |
---|---|
bin | 1100110010110… |
… | …1111101101100 |
3 | 10201222111102110 |
4 | 3030231331230 |
5 | 102214300034 |
6 | 5154124020 |
7 | 1221102414 |
oct | 314557554 |
9 | 121874373 |
10 | 53665644 |
11 | 2832487a |
12 | 15b80610 |
13 | b16ca26 |
14 | 71ad644 |
15 | 4aa0de9 |
hex | 332df6c |
53665644 has 12 divisors (see below), whose sum is σ = 125219864. Its totient is φ = 17888544.
The previous prime is 53665637. The next prime is 53665649. The reversal of 53665644 is 44656635.
It is a tau number, because it is divible by the number of its divisors (12).
It is not an unprimeable number, because it can be changed into a prime (53665649) 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, 2236057 + ... + 2236080.
Almost surely, 253665644 is an apocalyptic number.
It is an amenable number.
53665644 is an abundant number, since it is smaller than the sum of its proper divisors (71554220).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
53665644 is a wasteful number, since it uses less digits than its factorization.
53665644 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4472144 (or 4472142 counting only the distinct ones).
The product of its digits is 259200, while the sum is 39.
The square root of 53665644 is about 7325.6838588626. The cubic root of 53665644 is about 377.1945841913.
Subtracting from 53665644 its reverse (44656635), we obtain a palindrome (9009009).
The spelling of 53665644 in words is "fifty-three million, six hundred sixty-five thousand, six hundred forty-four".
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