87550780 has 12 divisors (see below), whose sum is σ = 183856680. Its totient is φ = 35020304.

The previous prime is 87550777. The next prime is 87550781. The reversal of 87550780 is 8705578.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87550781) 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, 2188750 + ... + 2188789.

It is an arithmetic number, because the mean of its divisors is an integer number (15321390).

Almost surely, 2^87550780 is an apocalyptic number.

It is an amenable number.

87550780 is an abundant number, since it is smaller than the sum of its proper divisors (96305900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87550780 is a wasteful number, since it uses less digits than its factorization.

87550780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377548 (or 4377546 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 87550780 is about 9356.8573784150. The cubic root of 87550780 is about 444.0378657206.

The spelling of 87550780 in words is "eighty-seven million, five hundred fifty thousand, seven hundred eighty".