223557245 has 4 divisors (see below), whose sum is σ = 268268700. Its totient is φ = 178845792.

The previous prime is 223557241. The next prime is 223557289. The reversal of 223557245 is 542755322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43943641 + 179613604 = 6629^2 + 13402^2 .

It is a cyclic number.

It is not a de Polignac number, because 223557245 - 2² = 223557241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223557241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22355720 + ... + 22355729.

It is an arithmetic number, because the mean of its divisors is an integer number (67067175).

Almost surely, 2^223557245 is an apocalyptic number.

It is an amenable number.

223557245 is a deficient number, since it is larger than the sum of its proper divisors (44711455).

223557245 is an equidigital number, since it uses as much as digits as its factorization.

223557245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44711454.

The product of its digits is 84000, while the sum is 35.

The square root of 223557245 is about 14951.8308243506. The cubic root of 223557245 is about 606.9173920714.

The spelling of 223557245 in words is "two hundred twenty-three million, five hundred fifty-seven thousand, two hundred forty-five".