Base | Representation |
---|---|
bin | 1010110111001… |
… | …11010100100011 |
3 | 20100110122001000 |
4 | 11123213110203 |
5 | 141312000102 |
6 | 13013043043 |
7 | 2154356430 |
oct | 533472443 |
9 | 210418030 |
10 | 91125027 |
11 | 4748a644 |
12 | 26626483 |
13 | 15b57046 |
14 | c160b87 |
15 | 800001c |
hex | 56e7523 |
91125027 has 64 divisors (see below), whose sum is σ = 161873920. Its totient is φ = 49572000.
The previous prime is 91125017. The next prime is 91125031. The reversal of 91125027 is 72052119.
It is not a de Polignac number, because 91125027 - 219 = 90600739 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Duffinian number.
It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 91125027 = 33 + 4503 = 2193 + 4323.
It is not an unprimeable number, because it can be changed into a prime (91125017) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 603402 + ... + 603552.
It is an arithmetic number, because the mean of its divisors is an integer number (2529280).
Almost surely, 291125027 is an apocalyptic number.
91125027 is a deficient number, since it is larger than the sum of its proper divisors (70748893).
91125027 is a wasteful number, since it uses less digits than its factorization.
91125027 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 301 (or 295 counting only the distinct ones).
The product of its (nonzero) digits is 1260, while the sum is 27.
The square root of 91125027 is about 9545.9429602318. The cubic root of 91125027 is about 450.0000444444. Note that the first 4 decimals are identical.
Subtracting from 91125027 its sum of digits (27), we obtain a cube (91125000 = 4503).
The spelling of 91125027 in words is "ninety-one million, one hundred twenty-five thousand, twenty-seven".
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