Base | Representation |
---|---|
bin | 1010001100010… |
… | …11100111110111 |
3 | 12221220011221022 |
4 | 11012023213313 |
5 | 133342202201 |
6 | 12252411355 |
7 | 2055536144 |
oct | 506134767 |
9 | 187804838 |
10 | 85506551 |
11 | 442a2379 |
12 | 24776b5b |
13 | 1493a8c0 |
14 | b4db3cb |
15 | 779041b |
hex | 518b9f7 |
85506551 has 4 divisors (see below), whose sum is σ = 92083992. Its totient is φ = 78929112.
The previous prime is 85506523. The next prime is 85506557. The reversal of 85506551 is 15560558.
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 85506551 - 218 = 85244407 is a prime.
It is a super-2 number, since 2×855065512 = 14622740527831202, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (85506557) 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, 3288701 + ... + 3288726.
It is an arithmetic number, because the mean of its divisors is an integer number (23020998).
Almost surely, 285506551 is an apocalyptic number.
85506551 is a deficient number, since it is larger than the sum of its proper divisors (6577441).
85506551 is a wasteful number, since it uses less digits than its factorization.
85506551 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6577440.
The product of its (nonzero) digits is 30000, while the sum is 35.
The square root of 85506551 is about 9246.9752351783. The cubic root of 85506551 is about 440.5546569196.
The spelling of 85506551 in words is "eighty-five million, five hundred six thousand, five hundred fifty-one".
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