87105550 has 48 divisors (see below), whose sum is σ = 186273792. Its totient is φ = 29685600.

The previous prime is 87105541. The next prime is 87105563. The reversal of 87105550 is 5550178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66199 + ... + 67501.

It is an arithmetic number, because the mean of its divisors is an integer number (3880704).

Almost surely, 2^87105550 is an apocalyptic number.

87105550 is an abundant number, since it is smaller than the sum of its proper divisors (99168242).

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

87105550 is a wasteful number, since it uses less digits than its factorization.

87105550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 87105550 is about 9333.0354119118. The cubic root of 87105550 is about 443.2838840331.

The spelling of 87105550 in words is "eighty-seven million, one hundred five thousand, five hundred fifty".