223243545 has 16 divisors (see below), whose sum is σ = 408216960. Its totient is φ = 102054144.

The previous prime is 223243513. The next prime is 223243549. The reversal of 223243545 is 545342322.

It is not a de Polignac number, because 223243545 - 2⁵ = 223243513 is a prime.

It is a super-3 number, since 3×223243545³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223243549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062960 + ... + 1063169.

It is an arithmetic number, because the mean of its divisors is an integer number (25513560).

Almost surely, 2^223243545 is an apocalyptic number.

It is an amenable number.

223243545 is a deficient number, since it is larger than the sum of its proper divisors (184973415).

223243545 is a wasteful number, since it uses less digits than its factorization.

223243545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126144.

The product of its digits is 28800, while the sum is 30.

The square root of 223243545 is about 14941.3367875836. The cubic root of 223243545 is about 606.6333796426.

Adding to 223243545 its reverse (545342322), we get a palindrome (768585867).

The spelling of 223243545 in words is "two hundred twenty-three million, two hundred forty-three thousand, five hundred forty-five".