4550 has 24 divisors (see below), whose sum is σ = 10416. Its totient is φ = 1440.

The previous prime is 4549. The next prime is 4561. The reversal of 4550 is 554.

4550 is nontrivially palindromic in base 12.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a plaindrome in base 11.

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, 344 + ... + 356.

It is an arithmetic number, because the mean of its divisors is an integer number (434).

2⁴⁵⁵⁰ is an apocalyptic number.

4550 is an abundant number, since it is smaller than the sum of its proper divisors (5866).

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 (5208).

4550 is a wasteful number, since it uses less digits than its factorization.

4550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 4550 is about 67.4536878162. The cubic root of 4550 is about 16.5705579634.

4550 divided by its sum of digits (14) gives a triangular number (325 = T₂₅).

The spelling of 4550 in words is "four thousand, five hundred fifty".