55523 has 4 divisors (see below), whose sum is σ = 59808. Its totient is φ = 51240.

The previous prime is 55511. The next prime is 55529. The reversal of 55523 is 32555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55523 - 2¹⁰ = 54499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55495 and 55504.

It is not an unprimeable number, because it can be changed into a prime (55529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2123 + ... + 2148.

It is an arithmetic number, because the mean of its divisors is an integer number (14952).

2⁵⁵⁵²³ is an apocalyptic number.

55523 is a deficient number, since it is larger than the sum of its proper divisors (4285).

55523 is a wasteful number, since it uses less digits than its factorization.

55523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284.

The product of its digits is 750, while the sum is 20.

The square root of 55523 is about 235.6331895129. The cubic root of 55523 is about 38.1496866005.

It can be divided in two parts, 5552 and 3, that added together give a palindrome (5555).

The spelling of 55523 in words is "fifty-five thousand, five hundred twenty-three".