87504845 has 4 divisors (see below), whose sum is σ = 105005820. Its totient is φ = 70003872.

The previous prime is 87504841. The next prime is 87504883. The reversal of 87504845 is 54840578.

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 43375396 + 44129449 = 6586^2 + 6643^2 .

It is a cyclic number.

It is not a de Polignac number, because 87504845 - 2² = 87504841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87504841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8750480 + ... + 8750489.

It is an arithmetic number, because the mean of its divisors is an integer number (26251455).

Almost surely, 2^87504845 is an apocalyptic number.

It is an amenable number.

87504845 is a deficient number, since it is larger than the sum of its proper divisors (17500975).

87504845 is a wasteful number, since it uses less digits than its factorization.

87504845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17500974.

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 87504845 is about 9354.4024394934. The cubic root of 87504845 is about 443.9601948056.

The spelling of 87504845 in words is "eighty-seven million, five hundred four thousand, eight hundred forty-five".