2223520345 has 8 divisors (see below), whose sum is σ = 2669575176. Its totient is φ = 1777915776.

The previous prime is 2223520309. The next prime is 2223520349. The reversal of 2223520345 is 5430253222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 326308096 + 1897212249 = 18064^2 + 43557^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2223520345 - 2¹³ = 2223512153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2223520349) 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, 101602 + ... + 121531.

It is an arithmetic number, because the mean of its divisors is an integer number (333696897).

Almost surely, 2^2223520345 is an apocalyptic number.

It is an amenable number.

2223520345 is a deficient number, since it is larger than the sum of its proper divisors (446054831).

2223520345 is a wasteful number, since it uses less digits than its factorization.

2223520345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225131.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 2223520345 is about 47154.2187402145. The cubic root of 2223520345 is about 1305.2099298708.

Adding to 2223520345 its reverse (5430253222), we get a palindrome (7653773567).

The spelling of 2223520345 in words is "two billion, two hundred twenty-three million, five hundred twenty thousand, three hundred forty-five".