87075169 has 2 divisors, whose sum is σ = 87075170. Its totient is φ = 87075168.

The previous prime is 87075127. The next prime is 87075179. The reversal of 87075169 is 96157078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74909025 + 12166144 = 8655^2 + 3488^2 .

It is a cyclic number.

It is not a de Polignac number, because 87075169 - 2⁷ = 87075041 is a prime.

It is a super-2 number, since 2×87075169² = 15164170112757122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87075179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43537584 + 43537585.

It is an arithmetic number, because the mean of its divisors is an integer number (43537585).

Almost surely, 2^87075169 is an apocalyptic number.

It is an amenable number.

87075169 is a deficient number, since it is larger than the sum of its proper divisors (1).

87075169 is an equidigital number, since it uses as much as digits as its factorization.

87075169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 87075169 is about 9331.4076644416. The cubic root of 87075169 is about 443.2323413024.

The spelling of 87075169 in words is "eighty-seven million, seventy-five thousand, one hundred sixty-nine".