| Base | Representation |
|---|---|
| bin | 1000000001110110… |
| … | …1000001011100000 |
| 3 | 12120012111001201220 |
| 4 | 2000131220023200 |
| 5 | 13403221003100 |
| 6 | 553510255040 |
| 7 | 104260216602 |
| oct | 20035501340 |
| 9 | 5505431656 |
| 10 | 2155250400 |
| 11 | a06645586 |
| 12 | 501957480 |
| 13 | 284693cc4 |
| 14 | 16634d172 |
| 15 | c932caa0 |
| hex | 807682e0 |
2155250400 has 144 divisors (see below), whose sum is σ = 7048548864. Its totient is φ = 572014080.
The previous prime is 2155250399. The next prime is 2155250401. The reversal of 2155250400 is 40525512.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (2155250399) and next prime (2155250401).
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2155250401) 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, 533187 + ... + 537213.
It is an arithmetic number, because the mean of its divisors is an integer number (48948256).
Almost surely, 22155250400 is an apocalyptic number.
2155250400 is a gapful number since it is divisible by the number (20) 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 2155250400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3524274432).
2155250400 is an abundant number, since it is smaller than the sum of its proper divisors (4893298464).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2155250400 is a wasteful number, since it uses less digits than its factorization.
2155250400 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4273 (or 4260 counting only the distinct ones).
The product of its (nonzero) digits is 2000, while the sum is 24.
The square root of 2155250400 is about 46424.6744738183. The cubic root of 2155250400 is about 1291.7126462069.
Adding to 2155250400 its reverse (40525512), we get a palindrome (2195775912).
The spelling of 2155250400 in words is "two billion, one hundred fifty-five million, two hundred fifty thousand, four hundred".
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