Base | Representation |
---|---|
bin | 1101011111001… |
… | …0001100100101 |
3 | 10221102212201222 |
4 | 3113302030211 |
5 | 103440112230 |
6 | 5340230125 |
7 | 1254544046 |
oct | 327621445 |
9 | 127385658 |
10 | 56566565 |
11 | 29a26330 |
12 | 16b3b345 |
13 | b947253 |
14 | 77268cd |
15 | 4e756e5 |
hex | 35f2325 |
56566565 has 32 divisors (see below), whose sum is σ = 79315200. Its totient is φ = 38272000.
The previous prime is 56566561. The next prime is 56566567.
56566565 is nontrivially palindromic in base 10.
It is not a de Polignac number, because 56566565 - 22 = 56566561 is a prime.
It is a super-3 number, since 3×565665653 (a number of 24 digits) contains 333 as substring.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (56566561) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94136 + ... + 94734.
It is an arithmetic number, because the mean of its divisors is an integer number (2478600).
Almost surely, 256566565 is an apocalyptic number.
56566565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.
It is an amenable number.
56566565 is a deficient number, since it is larger than the sum of its proper divisors (22748635).
56566565 is a wasteful number, since it uses less digits than its factorization.
56566565 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 733.
The product of its digits is 810000, while the sum is 44.
The square root of 56566565 is about 7521.0747237346. The cubic root of 56566565 is about 383.8721475586.
It can be divided in two parts, 5656 and 6565, that added together give a palindrome (12221).
The spelling of 56566565 in words is "fifty-six million, five hundred sixty-six thousand, five hundred sixty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.002 sec. • engine limits •