223557 has 8 divisors (see below), whose sum is σ = 305184. Its totient is φ = 145488.

The previous prime is 223549. The next prime is 223577. The reversal of 223557 is 755322.

223557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223557 - 2³ = 223549 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738 + ... + 995.

It is an arithmetic number, because the mean of its divisors is an integer number (38148).

2²²³⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

223557 is a deficient number, since it is larger than the sum of its proper divisors (81627).

223557 is a wasteful number, since it uses less digits than its factorization.

223557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779.

The product of its digits is 2100, while the sum is 24.

The square root of 223557 is about 472.8181468599. The cubic root of 223557 is about 60.6917170361.

Adding to 223557 its reverse (755322), we get a palindrome (978879).

It can be divided in two parts, 223 and 557, that added together give a triangular number (780 = T₃₉).

The spelling of 223557 in words is "two hundred twenty-three thousand, five hundred fifty-seven".