4455 has 20 divisors (see below), whose sum is σ = 8712. Its totient is φ = 2160.

The previous prime is 4451. The next prime is 4457. The reversal of 4455 is 5544.

It is a happy number.

4455 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 4455 - 2² = 4451 is a prime.

4455 is a lucky number.

It is a plaindrome in base 10 and base 16.

It is a nialpdrome in base 9.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4451) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 400 + ... + 410.

2⁴⁴⁵⁵ is an apocalyptic number.

4455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4455 is a deficient number, since it is larger than the sum of its proper divisors (4257).

4455 is a wasteful number, since it uses less digits than its factorization.

4455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28 (or 19 counting only the distinct ones).

The product of its digits is 400, while the sum is 18.

The square root of 4455 is about 66.7457863839. The cubic root of 4455 is about 16.4544196573.

Adding to 4455 its reverse (5544), we get a palindrome (9999).

Subtracting 4455 from its reverse (5544), we obtain a square (1089 = 33²).

It can be divided in two parts, 44 and 55, that added together give a palindrome (99).

The spelling of 4455 in words is "four thousand, four hundred fifty-five".