16550 has 12 divisors (see below), whose sum is σ = 30876. Its totient is φ = 6600.

The previous prime is 16547. The next prime is 16553. The reversal of 16550 is 5561.

It is an interprime number because it is at equal distance from previous prime (16547) and next prime (16553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116 + ... + 215.

It is an arithmetic number, because the mean of its divisors is an integer number (2573).

2¹⁶⁵⁵⁰ is an apocalyptic number.

16550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16550 is a deficient number, since it is larger than the sum of its proper divisors (14326).

16550 is a wasteful number, since it uses less digits than its factorization.

16550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 16550 is about 128.6468033027. The cubic root of 16550 is about 25.4839062874.

The spelling of 16550 in words is "sixteen thousand, five hundred fifty".