Base | Representation |
---|---|
bin | 1101011001110… |
… | …1101101100011 |
3 | 10220210022001022 |
4 | 3112131231203 |
5 | 103343024030 |
6 | 5325000055 |
7 | 1251603131 |
oct | 326355543 |
9 | 126708038 |
10 | 56220515 |
11 | 2980a33a |
12 | 169b302b |
13 | b8558a0 |
14 | 7676751 |
15 | 4e07de5 |
hex | 359db63 |
56220515 has 16 divisors (see below), whose sum is σ = 75000576. Its totient is φ = 40176000.
The previous prime is 56220491. The next prime is 56220517. The reversal of 56220515 is 51502265.
It is a de Polignac number, because none of the positive numbers 2k-56220515 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (56220517) 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, 11936 + ... + 15965.
It is an arithmetic number, because the mean of its divisors is an integer number (4687536).
Almost surely, 256220515 is an apocalyptic number.
56220515 is a deficient number, since it is larger than the sum of its proper divisors (18780061).
56220515 is a wasteful number, since it uses less digits than its factorization.
56220515 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27950.
The product of its (nonzero) digits is 3000, while the sum is 26.
The square root of 56220515 is about 7498.0340756761. The cubic root of 56220515 is about 383.0877574334.
The spelling of 56220515 in words is "fifty-six million, two hundred twenty thousand, five hundred fifteen".
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