87520711 has 2 divisors, whose sum is σ = 87520712. Its totient is φ = 87520710.

The previous prime is 87520679. The next prime is 87520729. The reversal of 87520711 is 11702578.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87520711 - 2⁵ = 87520679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87520751) 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, 43760355 + 43760356.

It is an arithmetic number, because the mean of its divisors is an integer number (43760356).

Almost surely, 2^87520711 is an apocalyptic number.

87520711 is a deficient number, since it is larger than the sum of its proper divisors (1).

87520711 is an equidigital number, since it uses as much as digits as its factorization.

87520711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 87520711 is about 9355.2504509500. The cubic root of 87520711 is about 443.9870254981.

The spelling of 87520711 in words is "eighty-seven million, five hundred twenty thousand, seven hundred eleven".