87711523 has 2 divisors, whose sum is σ = 87711524. Its totient is φ = 87711522.

The previous prime is 87711487. The next prime is 87711539. The reversal of 87711523 is 32511778.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87711523 - 2¹³ = 87703331 is a prime.

It is a super-2 number, since 2×87711523² = 15386622533959058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87711023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43855761 + 43855762.

It is an arithmetic number, because the mean of its divisors is an integer number (43855762).

Almost surely, 2^87711523 is an apocalyptic number.

87711523 is a deficient number, since it is larger than the sum of its proper divisors (1).

87711523 is an equidigital number, since it uses as much as digits as its factorization.

87711523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 34.

The square root of 87711523 is about 9365.4430220892. The cubic root of 87711523 is about 444.3094503603.

The spelling of 87711523 in words is "eighty-seven million, seven hundred eleven thousand, five hundred twenty-three".