87956017 has 2 divisors, whose sum is σ = 87956018. Its totient is φ = 87956016.

The previous prime is 87955981. The next prime is 87956023. The reversal of 87956017 is 71065978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48316401 + 39639616 = 6951^2 + 6296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87956017 is a prime.

It is not a weakly prime, because it can be changed into another prime (87956047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43978008 + 43978009.

It is an arithmetic number, because the mean of its divisors is an integer number (43978009).

Almost surely, 2^87956017 is an apocalyptic number.

It is an amenable number.

87956017 is a deficient number, since it is larger than the sum of its proper divisors (1).

87956017 is an equidigital number, since it uses as much as digits as its factorization.

87956017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 87956017 is about 9378.4869248723. The cubic root of 87956017 is about 444.7219017370.

The spelling of 87956017 in words is "eighty-seven million, nine hundred fifty-six thousand, seventeen".