86550 has 24 divisors (see below), whose sum is σ = 215016. Its totient is φ = 23040.

The previous prime is 86539. The next prime is 86561. The reversal of 86550 is 5568.

It is an interprime number because it is at equal distance from previous prime (86539) and next prime (86561).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 86550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139 + ... + 438.

It is an arithmetic number, because the mean of its divisors is an integer number (8959).

2⁸⁶⁵⁵⁰ is an apocalyptic number.

86550 is an abundant number, since it is smaller than the sum of its proper divisors (128466).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107508).

86550 is a wasteful number, since it uses less digits than its factorization.

86550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 86550 is about 294.1938136671. The cubic root of 86550 is about 44.2339467447.

It can be divided in two parts, 86 and 550, that added together give a palindrome (636).

The spelling of 86550 in words is "eighty-six thousand, five hundred fifty".