223541 has 4 divisors (see below), whose sum is σ = 230784. Its totient is φ = 216300.

The previous prime is 223529. The next prime is 223543. The reversal of 223541 is 145322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 145322 = 2 ⋅72661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223543) 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, 3575 + ... + 3636.

It is an arithmetic number, because the mean of its divisors is an integer number (57696).

2²²³⁵⁴¹ is an apocalyptic number.

It is an amenable number.

223541 is a deficient number, since it is larger than the sum of its proper divisors (7243).

223541 is an equidigital number, since it uses as much as digits as its factorization.

223541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242.

The product of its digits is 240, while the sum is 17.

The square root of 223541 is about 472.8012267328. The cubic root of 223541 is about 60.6902690972.

Adding to 223541 its reverse (145322), we get a palindrome (368863).

The spelling of 223541 in words is "two hundred twenty-three thousand, five hundred forty-one".