87133105 has 4 divisors (see below), whose sum is σ = 104559732. Its totient is φ = 69706480.

The previous prime is 87133099. The next prime is 87133127. The reversal of 87133105 is 50133178.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39025009 + 48108096 = 6247^2 + 6936^2 .

It is not a de Polignac number, because 87133105 - 2⁵ = 87133073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8713306 + ... + 8713315.

It is an arithmetic number, because the mean of its divisors is an integer number (26139933).

Almost surely, 2^87133105 is an apocalyptic number.

It is an amenable number.

87133105 is a deficient number, since it is larger than the sum of its proper divisors (17426627).

87133105 is a wasteful number, since it uses less digits than its factorization.

87133105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17426626.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 87133105 is about 9334.5115030193. The cubic root of 87133105 is about 443.3306219644.

The spelling of 87133105 in words is "eighty-seven million, one hundred thirty-three thousand, one hundred five".