Base | Representation |
---|---|
bin | 111001100111… |
… | …100001010001 |
3 | 1001102100220102 |
4 | 321213201101 |
5 | 12331312311 |
6 | 1255422145 |
7 | 242245136 |
oct | 71474121 |
9 | 31370812 |
10 | 15104081 |
11 | 8586a13 |
12 | 5084955 |
13 | 318ab35 |
14 | 201258d |
15 | 14d543b |
hex | e67851 |
15104081 has 4 divisors (see below), whose sum is σ = 15160500. Its totient is φ = 15047664.
The previous prime is 15104053. The next prime is 15104087. The reversal of 15104081 is 18040151.
15104081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18040151 = 47 ⋅383833.
It can be written as a sum of positive squares in 2 ways, for example, as 5856400 + 9247681 = 2420^2 + 3041^2 .
It is a cyclic number.
It is not a de Polignac number, because 15104081 - 26 = 15104017 is a prime.
It is a super-2 number, since 2×151040812 = 456266525709122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (15104087) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27806 + ... + 28343.
It is an arithmetic number, because the mean of its divisors is an integer number (3790125).
Almost surely, 215104081 is an apocalyptic number.
It is an amenable number.
15104081 is a deficient number, since it is larger than the sum of its proper divisors (56419).
15104081 is an equidigital number, since it uses as much as digits as its factorization.
15104081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 56418.
The product of its (nonzero) digits is 160, while the sum is 20.
The square root of 15104081 is about 3886.3969174545. The cubic root of 15104081 is about 247.1903061119.
The spelling of 15104081 in words is "fifteen million, one hundred four thousand, eighty-one".
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