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87317801 is a prime number
BaseRepresentation
bin1010011010001…
…01110100101001
320002022012111122
411031011310221
5134323132201
612355305025
72110121564
oct515056451
9202265448
1087317801
114531a17a
12252ab175
131512314c
14b84d4db
1579ebe1b
hex5345d29

87317801 has 2 divisors, whose sum is σ = 87317802. Its totient is φ = 87317800.

The previous prime is 87317777. The next prime is 87317803. The reversal of 87317801 is 10871378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86471401 + 846400 = 9299^2 + 920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-87317801 is a prime.

It is a Sophie Germain prime.

Together with 87317803, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87317803) 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, 43658900 + 43658901.

It is an arithmetic number, because the mean of its divisors is an integer number (43658901).

Almost surely, 287317801 is an apocalyptic number.

It is an amenable number.

87317801 is a deficient number, since it is larger than the sum of its proper divisors (1).

87317801 is an equidigital number, since it uses as much as digits as its factorization.

87317801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 87317801 is about 9344.3994456573. The cubic root of 87317801 is about 443.6436434654.

The spelling of 87317801 in words is "eighty-seven million, three hundred seventeen thousand, eight hundred one".