Base | Representation |
---|---|
bin | 1010011001101… |
… | …01101001011110 |
3 | 20002011211121220 |
4 | 11030311221132 |
5 | 134314022200 |
6 | 12354034210 |
7 | 2106424461 |
oct | 514655136 |
9 | 202154556 |
10 | 87251550 |
11 | 45284421 |
12 | 25278966 |
13 | 150cbc49 |
14 | b8332d8 |
15 | 79d74a0 |
hex | 5335a5e |
87251550 has 96 divisors (see below), whose sum is σ = 226176000. Its totient is φ = 22239360.
The previous prime is 87251543. The next prime is 87251603. The reversal of 87251550 is 5515278.
It is a happy number.
It is a super-2 number, since 2×872515502 = 15225665954805000, which contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 438351 + ... + 438549.
It is an arithmetic number, because the mean of its divisors is an integer number (2356000).
Almost surely, 287251550 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 87251550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113088000).
87251550 is an abundant number, since it is smaller than the sum of its proper divisors (138924450).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87251550 is a wasteful number, since it uses less digits than its factorization.
87251550 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 330 (or 325 counting only the distinct ones).
The product of its (nonzero) digits is 14000, while the sum is 33.
The square root of 87251550 is about 9340.8538153640. The cubic root of 87251550 is about 443.5314125444.
The spelling of 87251550 in words is "eighty-seven million, two hundred fifty-one thousand, five hundred fifty".
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