223056545 has 8 divisors (see below), whose sum is σ = 276897960. Its totient is φ = 172291840.

The previous prime is 223056539. The next prime is 223056557. The reversal of 223056545 is 545650322.

It can be written as a sum of positive squares in 4 ways, for example, as 28398241 + 194658304 = 5329^2 + 13952^2 .

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

It is not a de Polignac number, because 223056545 - 2⁸ = 223056289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769016 + ... + 769305.

It is an arithmetic number, because the mean of its divisors is an integer number (34612245).

Almost surely, 2^223056545 is an apocalyptic number.

It is an amenable number.

223056545 is a deficient number, since it is larger than the sum of its proper divisors (53841415).

223056545 is a wasteful number, since it uses less digits than its factorization.

223056545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538355.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 223056545 is about 14935.0776697010. The cubic root of 223056545 is about 606.4639501357.

The spelling of 223056545 in words is "two hundred twenty-three million, fifty-six thousand, five hundred forty-five".