87315015 has 32 divisors (see below), whose sum is σ = 146405376. Its totient is φ = 44352000.

The previous prime is 87314999. The next prime is 87315017. The reversal of 87315015 is 51051378.

It is not a de Polignac number, because 87315015 - 2⁴ = 87314999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87315017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115890 + ... + 116640.

It is an arithmetic number, because the mean of its divisors is an integer number (4575168).

Almost surely, 2^87315015 is an apocalyptic number.

87315015 is a deficient number, since it is larger than the sum of its proper divisors (59090361).

87315015 is a wasteful number, since it uses less digits than its factorization.

87315015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 87315015 is about 9344.2503712176. The cubic root of 87315015 is about 443.6389250524.

The spelling of 87315015 in words is "eighty-seven million, three hundred fifteen thousand, fifteen".