222445541 has 8 divisors (see below), whose sum is σ = 230224344. Its totient is φ = 214778880.

The previous prime is 222445511. The next prime is 222445577. The reversal of 222445541 is 145544222.

It can be written as a sum of positive squares in 4 ways, for example, as 1060900 + 221384641 = 1030^2 + 14879^2 .

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 222445541 - 2²⁶ = 155336677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222445511) 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, 23990 + ... + 31943.

It is an arithmetic number, because the mean of its divisors is an integer number (28778043).

Almost surely, 2^222445541 is an apocalyptic number.

It is an amenable number.

222445541 is a deficient number, since it is larger than the sum of its proper divisors (7778803).

222445541 is an equidigital number, since it uses as much as digits as its factorization.

222445541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56071.

The product of its digits is 12800, while the sum is 29.

The square root of 222445541 is about 14914.6083086349. The cubic root of 222445541 is about 605.9096949236.

Adding to 222445541 its reverse (145544222), we get a palindrome (367989763).

The spelling of 222445541 in words is "two hundred twenty-two million, four hundred forty-five thousand, five hundred forty-one".