87550387 has 4 divisors (see below), whose sum is σ = 87569136. Its totient is φ = 87531640.

The previous prime is 87550381. The next prime is 87550409. The reversal of 87550387 is 78305578.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 87550387 - 2²³ = 79161779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87550381) 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, 3837 + ... + 13777.

It is an arithmetic number, because the mean of its divisors is an integer number (21892284).

Almost surely, 2^87550387 is an apocalyptic number.

87550387 is a deficient number, since it is larger than the sum of its proper divisors (18749).

87550387 is an equidigital number, since it uses as much as digits as its factorization.

87550387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18748.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 87550387 is about 9356.8363777508. The cubic root of 87550387 is about 444.0372013171.

The spelling of 87550387 in words is "eighty-seven million, five hundred fifty thousand, three hundred eighty-seven".