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87000497 is a prime number
BaseRepresentation
bin1010010111110…
…00010110110001
320001201002020122
411023320112301
5134233003442
612344420025
72104330523
oct513702661
9201632218
1087000497
1145122841
1225177615
13150418ac
14b7a9a13
157987dd2
hex52f85b1

87000497 has 2 divisors, whose sum is σ = 87000498. Its totient is φ = 87000496.

The previous prime is 87000479. The next prime is 87000499. The reversal of 87000497 is 79400078.

Together with previous prime (87000479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82156096 + 4844401 = 9064^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 87000497 - 28 = 87000241 is a prime.

Together with 87000499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87000499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43500248 + 43500249.

It is an arithmetic number, because the mean of its divisors is an integer number (43500249).

Almost surely, 287000497 is an apocalyptic number.

It is an amenable number.

87000497 is a deficient number, since it is larger than the sum of its proper divisors (1).

87000497 is an equidigital number, since it uses as much as digits as its factorization.

87000497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 87000497 is about 9327.4056950473. The cubic root of 87000497 is about 443.1056059343.

The spelling of 87000497 in words is "eighty-seven million, four hundred ninety-seven", and thus it is an aban number.