87588517 has 2 divisors, whose sum is σ = 87588518. Its totient is φ = 87588516.

The previous prime is 87588493. The next prime is 87588521. The reversal of 87588517 is 71588578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53494596 + 34093921 = 7314^2 + 5839^2 .

It is a cyclic number.

It is not a de Polignac number, because 87588517 - 2²³ = 79199909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87585517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43794258 + 43794259.

It is an arithmetic number, because the mean of its divisors is an integer number (43794259).

Almost surely, 2^87588517 is an apocalyptic number.

It is an amenable number.

87588517 is a deficient number, since it is larger than the sum of its proper divisors (1).

87588517 is an equidigital number, since it uses as much as digits as its factorization.

87588517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 627200, while the sum is 49.

The square root of 87588517 is about 9358.8737036034. The cubic root of 87588517 is about 444.1016544155.

The spelling of 87588517 in words is "eighty-seven million, five hundred eighty-eight thousand, five hundred seventeen".