| Base | Representation |
|---|---|
| bin | 1101000111010… |
| … | …0000110110000 |
| 3 | 10211111100220100 |
| 4 | 3101310012300 |
| 5 | 103040022040 |
| 6 | 5242512400 |
| 7 | 1235335200 |
| oct | 321640660 |
| 9 | 124440810 |
| 10 | 55001520 |
| 11 | 29057502 |
| 12 | 16505700 |
| 13 | b519aa2 |
| 14 | 743a400 |
| 15 | 4c66b30 |
| hex | 34741b0 |
55001520 has 180 divisors, whose sum is σ = 215008560. Its totient is φ = 12563712.
The previous prime is 55001519. The next prime is 55001521. The reversal of 55001520 is 2510055.
It is an interprime number because it is at equal distance from previous prime (55001519) and next prime (55001521).
It is a tau number, because it is divible by the number of its divisors (180).
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 = 55001493 and 55001502.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (55001521) 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 35 ways as a sum of consecutive naturals, for example, 34501 + ... + 36059.
It is an arithmetic number, because the mean of its divisors is an integer number (1194492).
Almost surely, 255001520 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 55001520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107504280).
55001520 is an abundant number, since it is smaller than the sum of its proper divisors (160007040).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
55001520 is a wasteful number, since it uses less digits than its factorization.
55001520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1592 (or 1576 counting only the distinct ones).
The product of its (nonzero) digits is 250, while the sum is 18.
The square root of 55001520 is about 7416.3009647667. The cubic root of 55001520 is about 380.2987493698.
Adding to 55001520 its reverse (2510055), we get a palindrome (57511575).
The spelling of 55001520 in words is "fifty-five million, one thousand, five hundred twenty".
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