87581875 has 20 divisors (see below), whose sum is σ = 115894152. Its totient is φ = 65936000.

The previous prime is 87581873. The next prime is 87581891. The reversal of 87581875 is 57818578.

It is not a de Polignac number, because 87581875 - 2¹ = 87581873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87581873) 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 19 ways as a sum of consecutive naturals, for example, 6504 + ... + 14746.

Almost surely, 2^87581875 is an apocalyptic number.

87581875 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

87581875 is a deficient number, since it is larger than the sum of its proper divisors (28312277).

87581875 is an equidigital number, since it uses as much as digits as its factorization.

87581875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280 (or 8265 counting only the distinct ones).

The product of its digits is 627200, while the sum is 49.

The square root of 87581875 is about 9358.5188464842. The cubic root of 87581875 is about 444.0904284472.

The spelling of 87581875 in words is "eighty-seven million, five hundred eighty-one thousand, eight hundred seventy-five".