87317105 has 4 divisors (see below), whose sum is σ = 104780532. Its totient is φ = 69853680.

The previous prime is 87317101. The next prime is 87317137. The reversal of 87317105 is 50171378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50171378 = 2 ⋅25085689.

It can be written as a sum of positive squares in 2 ways, for example, as 25411681 + 61905424 = 5041^2 + 7868^2 .

It is not a de Polignac number, because 87317105 - 2² = 87317101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87317101) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8731706 + ... + 8731715.

It is an arithmetic number, because the mean of its divisors is an integer number (26195133).

Almost surely, 2^87317105 is an apocalyptic number.

It is an amenable number.

87317105 is a deficient number, since it is larger than the sum of its proper divisors (17463427).

87317105 is a wasteful number, since it uses less digits than its factorization.

87317105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17463426.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 87317105 is about 9344.3622040244. The cubic root of 87317105 is about 443.6424647184.

The spelling of 87317105 in words is "eighty-seven million, three hundred seventeen thousand, one hundred five".