87515 has 8 divisors (see below), whose sum is σ = 109728. Its totient is φ = 66880.

The previous prime is 87511. The next prime is 87517. The reversal of 87515 is 51578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87515 - 2² = 87511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266 + ... + 495.

It is an arithmetic number, because the mean of its divisors is an integer number (13716).

2⁸⁷⁵¹⁵ is an apocalyptic number.

87515 is a deficient number, since it is larger than the sum of its proper divisors (22213).

87515 is a wasteful number, since it uses less digits than its factorization.

87515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789.

The product of its digits is 1400, while the sum is 26.

The square root of 87515 is about 295.8293426961. The cubic root of 87515 is about 44.3977368108.

Subtracting from 87515 its reverse (51578), we obtain a cube (35937 = 33³).

The spelling of 87515 in words is "eighty-seven thousand, five hundred fifteen".