| Base | Representation |
|---|---|
| bin | 1100110001000… |
| … | …0100111100000 |
| 3 | 10201202101112110 |
| 4 | 3030100213200 |
| 5 | 102201423230 |
| 6 | 5151355320 |
| 7 | 1220062104 |
| oct | 314204740 |
| 9 | 121671473 |
| 10 | 53545440 |
| 11 | 28252533 |
| 12 | 15b22b40 |
| 13 | b12a0c0 |
| 14 | 717b904 |
| 15 | 4a7a4b0 |
| hex | 33109e0 |
53545440 has 96 divisors (see below), whose sum is σ = 181663776. Its totient is φ = 13178880.
The previous prime is 53545433. The next prime is 53545447. The reversal of 53545440 is 4454535.
It is an interprime number because it is at equal distance from previous prime (53545433) and next prime (53545447).
It is a tau number, because it is divible by the number of its divisors (96).
It is a super-2 number, since 2×535454402 = 5734228289587200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (30).
It is a junction number, because it is equal to n+sod(n) for n = 53545398 and 53545407.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (53545447) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950 + ... + 10530.
It is an arithmetic number, because the mean of its divisors is an integer number (1892331).
Almost surely, 253545440 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 53545440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90831888).
53545440 is an abundant number, since it is smaller than the sum of its proper divisors (128118336).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
53545440 is a wasteful number, since it uses less digits than its factorization.
53545440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8612 (or 8604 counting only the distinct ones).
The product of its (nonzero) digits is 24000, while the sum is 30.
The square root of 53545440 is about 7317.4749743337. The cubic root of 53545440 is about 376.9127515406.
Adding to 53545440 its reverse (4454535), we get a palindrome (57999975).
The spelling of 53545440 in words is "fifty-three million, five hundred forty-five thousand, four hundred forty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •