87076181 has 2 divisors, whose sum is σ = 87076182. Its totient is φ = 87076180.

The previous prime is 87076151. The next prime is 87076189. The reversal of 87076181 is 18167078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71402500 + 15673681 = 8450^2 + 3959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87076181 is a prime.

It is a super-2 number, since 2×87076181² = 15164522595089522, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87076189) 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, 43538090 + 43538091.

It is an arithmetic number, because the mean of its divisors is an integer number (43538091).

Almost surely, 2^87076181 is an apocalyptic number.

It is an amenable number.

87076181 is a deficient number, since it is larger than the sum of its proper divisors (1).

87076181 is an equidigital number, since it uses as much as digits as its factorization.

87076181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 87076181 is about 9331.4618897577. The cubic root of 87076181 is about 443.2340583988.

The spelling of 87076181 in words is "eighty-seven million, seventy-six thousand, one hundred eighty-one".