222404345 has 4 divisors (see below), whose sum is σ = 266885220. Its totient is φ = 177923472.

The previous prime is 222404327. The next prime is 222404407. The reversal of 222404345 is 543404222.

It is a happy number.

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 165688384 + 56715961 = 12872^2 + 7531^2 .

It is a cyclic number.

It is not a de Polignac number, because 222404345 - 2²⁰ = 221355769 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22240430 + ... + 22240439.

It is an arithmetic number, because the mean of its divisors is an integer number (66721305).

Almost surely, 2^222404345 is an apocalyptic number.

It is an amenable number.

222404345 is a deficient number, since it is larger than the sum of its proper divisors (44480875).

222404345 is an equidigital number, since it uses as much as digits as its factorization.

222404345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44480874.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 222404345 is about 14913.2271826054. The cubic root of 222404345 is about 605.8722886193.

Adding to 222404345 its reverse (543404222), we get a palindrome (765808567).

The spelling of 222404345 in words is "two hundred twenty-two million, four hundred four thousand, three hundred forty-five".