Base | Representation |
---|---|
bin | 101000111011110010… |
… | …0111010001010100101 |
3 | 22101220021201121001121 |
4 | 1101313210322022211 |
5 | 2420012302310203 |
6 | 104214440053541 |
7 | 6231244335604 |
oct | 1216744721245 |
9 | 271807647047 |
10 | 87905510053 |
11 | 3430a406869 |
12 | 150534642b1 |
13 | 839bc1340a |
14 | 437ca87a3b |
15 | 24475520bd |
hex | 147793a2a5 |
87905510053 has 2 divisors, whose sum is σ = 87905510054. Its totient is φ = 87905510052.
The previous prime is 87905510009. The next prime is 87905510059. The reversal of 87905510053 is 35001550978.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 77382443329 + 10523066724 = 278177^2 + 102582^2 .
It is a cyclic number.
It is not a de Polignac number, because 87905510053 - 225 = 87871955621 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 87905509991 and 87905510009.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (87905510059) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43952755026 + 43952755027.
It is an arithmetic number, because the mean of its divisors is an integer number (43952755027).
Almost surely, 287905510053 is an apocalyptic number.
It is an amenable number.
87905510053 is a deficient number, since it is larger than the sum of its proper divisors (1).
87905510053 is an equidigital number, since it uses as much as digits as its factorization.
87905510053 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 189000, while the sum is 43.
The spelling of 87905510053 in words is "eighty-seven billion, nine hundred five million, five hundred ten thousand, fifty-three".
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