87275187 has 6 divisors (see below), whose sum is σ = 126064172. Its totient is φ = 58183452.

The previous prime is 87275143. The next prime is 87275191. The reversal of 87275187 is 78157278.

It is not a de Polignac number, because 87275187 - 2¹⁹ = 86750899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87275387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4848613 + ... + 4848630.

Almost surely, 2^87275187 is an apocalyptic number.

87275187 is a deficient number, since it is larger than the sum of its proper divisors (38788985).

87275187 is a wasteful number, since it uses less digits than its factorization.

87275187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9697249 (or 9697246 counting only the distinct ones).

The product of its digits is 219520, while the sum is 45.

The square root of 87275187 is about 9342.1189780478. The cubic root of 87275187 is about 443.5714607553.

The spelling of 87275187 in words is "eighty-seven million, two hundred seventy-five thousand, one hundred eighty-seven".