87081575 has 36 divisors (see below), whose sum is σ = 127605672. Its totient is φ = 58766400.

The previous prime is 87081563. The next prime is 87081593. The reversal of 87081575 is 57518078.

It is not a de Polignac number, because 87081575 - 2⁴ = 87081559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 81545 + ... + 82605.

It is an arithmetic number, because the mean of its divisors is an integer number (3544602).

Almost surely, 2^87081575 is an apocalyptic number.

87081575 is a deficient number, since it is larger than the sum of its proper divisors (40524097).

87081575 is a wasteful number, since it uses less digits than its factorization.

87081575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 87081575 is about 9331.7509075200. The cubic root of 87081575 is about 443.2432103664.

The spelling of 87081575 in words is "eighty-seven million, eighty-one thousand, five hundred seventy-five".