87588161 has 2 divisors, whose sum is σ = 87588162. Its totient is φ = 87588160.

The previous prime is 87588143. The next prime is 87588173. The reversal of 87588161 is 16188578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83905600 + 3682561 = 9160^2 + 1919^2 .

It is a cyclic number.

It is not a de Polignac number, because 87588161 - 2²⁶ = 20479297 is a prime.

It is not a weakly prime, because it can be changed into another prime (87588121) 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, 43794080 + 43794081.

It is an arithmetic number, because the mean of its divisors is an integer number (43794081).

Almost surely, 2^87588161 is an apocalyptic number.

It is an amenable number.

87588161 is a deficient number, since it is larger than the sum of its proper divisors (1).

87588161 is an equidigital number, since it uses as much as digits as its factorization.

87588161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 44.

The square root of 87588161 is about 9358.8546842015. The cubic root of 87588161 is about 444.1010527369.

The spelling of 87588161 in words is "eighty-seven million, five hundred eighty-eight thousand, one hundred sixty-one".