243222401 has 8 divisors (see below), whose sum is σ = 267155520. Its totient is φ = 220402512.

The previous prime is 243222379. The next prime is 243222403. The reversal of 243222401 is 104222342.

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 243222401 - 2⁶ = 243222337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243222403) 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, 277850 + ... + 278723.

It is an arithmetic number, because the mean of its divisors is an integer number (33394440).

Almost surely, 2^243222401 is an apocalyptic number.

It is an amenable number.

243222401 is a deficient number, since it is larger than the sum of its proper divisors (23933119).

243222401 is a wasteful number, since it uses less digits than its factorization.

243222401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556615.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 243222401 is about 15595.5891520648. The cubic root of 243222401 is about 624.2154644718.

Adding to 243222401 its reverse (104222342), we get a palindrome (347444743).

The spelling of 243222401 in words is "two hundred forty-three million, two hundred twenty-two thousand, four hundred one".