| Base | Representation |
|---|---|
| bin | 111110111000100… |
| … | …101100010100100 |
| 3 | 2201112012122001000 |
| 4 | 332320211202210 |
| 5 | 4130041134340 |
| 6 | 252404433300 |
| 7 | 35100350421 |
| oct | 7670454244 |
| 9 | 2645178030 |
| 10 | 1055021220 |
| 11 | 4a1594070 |
| 12 | 2553a8830 |
| 13 | 13a762c16 |
| 14 | a0190d48 |
| 15 | 6294dd30 |
| hex | 3ee258a4 |
1055021220 has 192 divisors, whose sum is σ = 3657830400. Its totient is φ = 250254720.
The previous prime is 1055021213. The next prime is 1055021239. The reversal of 1055021220 is 221205501.
1055021220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×10550212202 = 2226139549300576800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 1055021193 and 1055021202.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 277291 + ... + 281069.
It is an arithmetic number, because the mean of its divisors is an integer number (19051200).
Almost surely, 21055021220 is an apocalyptic number.
1055021220 is a gapful number since it is divisible by the number (10) 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 1055021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828915200).
1055021220 is an abundant number, since it is smaller than the sum of its proper divisors (2602809180).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1055021220 is a wasteful number, since it uses less digits than its factorization.
1055021220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3855 (or 3847 counting only the distinct ones).
The product of its (nonzero) digits is 200, while the sum is 18.
The square root of 1055021220 is about 32481.0901910635. The cubic root of 1055021220 is about 1018.0139555471.
Adding to 1055021220 its reverse (221205501), we get a palindrome (1276226721).
The spelling of 1055021220 in words is "one billion, fifty-five million, twenty-one thousand, two hundred twenty".
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