87275185 has 4 divisors (see below), whose sum is σ = 104730228. Its totient is φ = 69820144.

The previous prime is 87275143. The next prime is 87275191. The reversal of 87275185 is 58157278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66699889 + 20575296 = 8167^2 + 4536^2 .

It is a cyclic number.

It is not a de Polignac number, because 87275185 - 2¹⁹ = 86750897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8727514 + ... + 8727523.

It is an arithmetic number, because the mean of its divisors is an integer number (26182557).

Almost surely, 2^87275185 is an apocalyptic number.

It is an amenable number.

87275185 is a deficient number, since it is larger than the sum of its proper divisors (17455043).

87275185 is a wasteful number, since it uses less digits than its factorization.

87275185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17455042.

The product of its digits is 156800, while the sum is 43.

The square root of 87275185 is about 9342.1188710057. The cubic root of 87275185 is about 443.5714573670.

The spelling of 87275185 in words is "eighty-seven million, two hundred seventy-five thousand, one hundred eighty-five".