85550 has 24 divisors (see below), whose sum is σ = 167400. Its totient is φ = 32480.

The previous prime is 85549. The next prime is 85571. The reversal of 85550 is 5558.

It is a happy number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1421 + ... + 1479.

It is an arithmetic number, because the mean of its divisors is an integer number (6975).

2⁸⁵⁵⁵⁰ is an apocalyptic number.

85550 is a deficient number, since it is larger than the sum of its proper divisors (81850).

85550 is a wasteful number, since it uses less digits than its factorization.

85550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 85550 is about 292.4893160442. The cubic root of 85550 is about 44.0629264919.

The spelling of 85550 in words is "eighty-five thousand, five hundred fifty".