985550 has 24 divisors (see below), whose sum is σ = 1915056. Its totient is φ = 376640.

The previous prime is 985547. The next prime is 985571. The reversal of 985550 is 55589.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 722 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (79794).

2⁹⁸⁵⁵⁵⁰ is an apocalyptic number.

985550 is a deficient number, since it is larger than the sum of its proper divisors (929506).

985550 is a wasteful number, since it uses less digits than its factorization.

985550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 985550 is about 992.7487093923. The cubic root of 985550 is about 99.5159944995.

The spelling of 985550 in words is "nine hundred eighty-five thousand, five hundred fifty".