87157711 has 2 divisors, whose sum is σ = 87157712. Its totient is φ = 87157710.

The previous prime is 87157703. The next prime is 87157717. The reversal of 87157711 is 11775178.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87157711 - 2³ = 87157703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87157717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43578855 + 43578856.

It is an arithmetic number, because the mean of its divisors is an integer number (43578856).

Almost surely, 2^87157711 is an apocalyptic number.

87157711 is a deficient number, since it is larger than the sum of its proper divisors (1).

87157711 is an equidigital number, since it uses as much as digits as its factorization.

87157711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13720, while the sum is 37.

The square root of 87157711 is about 9335.8294221778. The cubic root of 87157711 is about 443.3723495665.

The spelling of 87157711 in words is "eighty-seven million, one hundred fifty-seven thousand, seven hundred eleven".