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87071 is a prime number
BaseRepresentation
bin10101010000011111
311102102212
4111100133
510241241
61511035
7511565
oct252037
9142385
1087071
115a466
124247b
133082a
1423a35
151abeb
hex1541f

87071 has 2 divisors, whose sum is σ = 87072. Its totient is φ = 87070.

The previous prime is 87049. The next prime is 87083. The reversal of 87071 is 17078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87071 - 214 = 70687 is a prime.

It is a Sophie Germain prime.

It is equal to p8456 and since 87071 and 8456 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43535 + 43536.

It is an arithmetic number, because the mean of its divisors is an integer number (43536).

287071 is an apocalyptic number.

87071 is a deficient number, since it is larger than the sum of its proper divisors (1).

87071 is an equidigital number, since it uses as much as digits as its factorization.

87071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 87071 is about 295.0779558015. The cubic root of 87071 is about 44.3225267471.

The spelling of 87071 in words is "eighty-seven thousand, seventy-one".