| Base | Representation |
|---|---|
| bin | 1101001010110… |
| … | …0001011100000 |
| 3 | 10211221000222000 |
| 4 | 3102230023200 |
| 5 | 103114344300 |
| 6 | 5251444000 |
| 7 | 1240312623 |
| oct | 322541340 |
| 9 | 124830860 |
| 10 | 55231200 |
| 11 | 291a4022 |
| 12 | 165b6600 |
| 13 | b59a4ab |
| 14 | 7499dba |
| 15 | 4caec00 |
| hex | 34ac2e0 |
55231200 has 144 divisors (see below), whose sum is σ = 199830960. Its totient is φ = 14722560.
The previous prime is 55231199. The next prime is 55231201. The reversal of 55231200 is 213255.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (55231199) and next prime (55231201).
It is a tau number, because it is divible by the number of its divisors (144).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (55231201) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20322 + ... + 22878.
It is an arithmetic number, because the mean of its divisors is an integer number (1387715).
Almost surely, 255231200 is an apocalyptic number.
55231200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 55231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99915480).
55231200 is an abundant number, since it is smaller than the sum of its proper divisors (144599760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
55231200 is a wasteful number, since it uses less digits than its factorization.
55231200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2586 (or 2567 counting only the distinct ones).
The product of its (nonzero) digits is 300, while the sum is 18.
The square root of 55231200 is about 7431.7696412093. The cubic root of 55231200 is about 380.8273754535.
Adding to 55231200 its reverse (213255), we get a palindrome (55444455).
The spelling of 55231200 in words is "fifty-five million, two hundred thirty-one thousand, two hundred".
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