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87000233 is a prime number
BaseRepresentation
bin1010010111110…
…00010010101001
320001201001212212
411023320102221
5134233001413
612344414505
72104326665
oct513702251
9201631785
1087000233
1145122621
1225177435
1315041738
14b7a98a5
157987ca8
hex52f84a9

87000233 has 2 divisors, whose sum is σ = 87000234. Its totient is φ = 87000232.

The previous prime is 87000217. The next prime is 87000241. The reversal of 87000233 is 33200078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58782889 + 28217344 = 7667^2 + 5312^2 .

It is a cyclic number.

It is not a de Polignac number, because 87000233 - 24 = 87000217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87000199 and 87000208.

It is not a weakly prime, because it can be changed into another prime (87000533) 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 as a sum of consecutive naturals, namely, 43500116 + 43500117.

It is an arithmetic number, because the mean of its divisors is an integer number (43500117).

Almost surely, 287000233 is an apocalyptic number.

It is an amenable number.

87000233 is a deficient number, since it is larger than the sum of its proper divisors (1).

87000233 is an equidigital number, since it uses as much as digits as its factorization.

87000233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 87000233 is about 9327.3915431915. The cubic root of 87000233 is about 443.1051577376.

The spelling of 87000233 in words is "eighty-seven million, two hundred thirty-three", and thus it is an aban number.