13875087 has 4 divisors (see below), whose sum is σ = 18500120. Its totient is φ = 9250056.

The previous prime is 13875047. The next prime is 13875101. The reversal of 13875087 is 78057831.

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

It is not a de Polignac number, because 13875087 - 2⁶ = 13875023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13875047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312512 + ... + 2312517.

It is an arithmetic number, because the mean of its divisors is an integer number (4625030).

Almost surely, 2^13875087 is an apocalyptic number.

13875087 is a deficient number, since it is larger than the sum of its proper divisors (4625033).

13875087 is an equidigital number, since it uses as much as digits as its factorization.

13875087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625032.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 13875087 is about 3724.9277845349. The cubic root of 13875087 is about 240.2952789219.

The spelling of 13875087 in words is "thirteen million, eight hundred seventy-five thousand, eighty-seven".