Base | Representation |
---|---|
bin | 10010100000101… |
… | …11001001100111 |
3 | 101211012020200220 |
4 | 21100113021213 |
5 | 304223042241 |
6 | 23224135423 |
7 | 3563615145 |
oct | 1120271147 |
9 | 354166626 |
10 | 155284071 |
11 | 7a721248 |
12 | 44007573 |
13 | 2622c087 |
14 | 168a2595 |
15 | d975166 |
hex | 9417267 |
155284071 has 8 divisors (see below), whose sum is σ = 208980864. Its totient is φ = 102555000.
The previous prime is 155284057. The next prime is 155284121. The reversal of 155284071 is 170482551.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 155284071 - 25 = 155284039 is a prime.
It is a super-2 number, since 2×1552840712 = 48226285412666082, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (155284271) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241555 + ... + 242196.
It is an arithmetic number, because the mean of its divisors is an integer number (26122608).
Almost surely, 2155284071 is an apocalyptic number.
155284071 is a deficient number, since it is larger than the sum of its proper divisors (53696793).
155284071 is a wasteful number, since it uses less digits than its factorization.
155284071 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 483861.
The product of its (nonzero) digits is 11200, while the sum is 33.
The square root of 155284071 is about 12461.3029415066. The cubic root of 155284071 is about 537.4964943705.
The spelling of 155284071 in words is "one hundred fifty-five million, two hundred eighty-four thousand, seventy-one".
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