87752761 has 2 divisors, whose sum is σ = 87752762. Its totient is φ = 87752760.

The previous prime is 87752741. The next prime is 87752767. The reversal of 87752761 is 16725778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82083600 + 5669161 = 9060^2 + 2381^2 .

It is a cyclic number.

It is not a de Polignac number, because 87752761 - 2⁵ = 87752729 is a prime.

It is not a weakly prime, because it can be changed into another prime (87752767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43876380 + 43876381.

It is an arithmetic number, because the mean of its divisors is an integer number (43876381).

Almost surely, 2^87752761 is an apocalyptic number.

It is an amenable number.

87752761 is a deficient number, since it is larger than the sum of its proper divisors (1).

87752761 is an equidigital number, since it uses as much as digits as its factorization.

87752761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164640, while the sum is 43.

The square root of 87752761 is about 9367.6443677159. The cubic root of 87752761 is about 444.3790708684.

The spelling of 87752761 in words is "eighty-seven million, seven hundred fifty-two thousand, seven hundred sixty-one".