87505115 has 4 divisors (see below), whose sum is σ = 105006144. Its totient is φ = 70004088.

The previous prime is 87505063. The next prime is 87505123. The reversal of 87505115 is 51150578.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87505115 - 2¹² = 87501019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8750507 + ... + 8750516.

It is an arithmetic number, because the mean of its divisors is an integer number (26251536).

Almost surely, 2^87505115 is an apocalyptic number.

87505115 is a deficient number, since it is larger than the sum of its proper divisors (17501029).

87505115 is a wasteful number, since it uses less digits than its factorization.

87505115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17501028.

The product of its (nonzero) digits is 7000, while the sum is 32.

The square root of 87505115 is about 9354.4168711898. The cubic root of 87505115 is about 443.9606514246.

The spelling of 87505115 in words is "eighty-seven million, five hundred five thousand, one hundred fifteen".