245222243 has 8 divisors (see below), whose sum is σ = 283029600. Its totient is φ = 208108800.

The previous prime is 245222221. The next prime is 245222281. The reversal of 245222243 is 342222542.

It is a happy number.

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 245222243 - 2¹² = 245218147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245222203) 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 7 ways as a sum of consecutive naturals, for example, 172718 + ... + 174131.

It is an arithmetic number, because the mean of its divisors is an integer number (35378700).

Almost surely, 2^245222243 is an apocalyptic number.

245222243 is a deficient number, since it is larger than the sum of its proper divisors (37807357).

245222243 is a wasteful number, since it uses less digits than its factorization.

245222243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346957.

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

The square root of 245222243 is about 15659.5735254827. The cubic root of 245222243 is about 625.9216210089.

Adding to 245222243 its reverse (342222542), we get a palindrome (587444785).

The spelling of 245222243 in words is "two hundred forty-five million, two hundred twenty-two thousand, two hundred forty-three".