Base | Representation |
---|---|
bin | 1001000000000… |
… | …01111101111011 |
3 | 12021002002010011 |
4 | 10200001331323 |
5 | 123312134111 |
6 | 11254202351 |
7 | 1604533513 |
oct | 440017573 |
9 | 167062104 |
10 | 75505531 |
11 | 39691472 |
12 | 213533b7 |
13 | 1284873a |
14 | a056843 |
15 | 6967021 |
hex | 4801f7b |
75505531 has 4 divisors (see below), whose sum is σ = 78109200. Its totient is φ = 72901864.
The previous prime is 75505523. The next prime is 75505603. The reversal of 75505531 is 13550557.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 75505531 - 23 = 75505523 is a prime.
It is a super-2 number, since 2×755055312 = 11402170423183922, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 75505493 and 75505502.
It is not an unprimeable number, because it can be changed into a prime (75505501) 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 3 ways as a sum of consecutive naturals, for example, 1301791 + ... + 1301848.
It is an arithmetic number, because the mean of its divisors is an integer number (19527300).
Almost surely, 275505531 is an apocalyptic number.
75505531 is a deficient number, since it is larger than the sum of its proper divisors (2603669).
75505531 is a wasteful number, since it uses less digits than its factorization.
75505531 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2603668.
The product of its (nonzero) digits is 13125, while the sum is 31.
The square root of 75505531 is about 8689.3918659478. The cubic root of 75505531 is about 422.6617258387.
The spelling of 75505531 in words is "seventy-five million, five hundred five thousand, five hundred thirty-one".
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