244421057 has 2 divisors, whose sum is σ = 244421058. Its totient is φ = 244421056.

The previous prime is 244421041. The next prime is 244421059. The reversal of 244421057 is 750124442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242861056 + 1560001 = 15584^2 + 1249^2 .

It is a cyclic number.

It is not a de Polignac number, because 244421057 - 2⁴ = 244421041 is a prime.

Together with 244421059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (244421059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122210528 + 122210529.

It is an arithmetic number, because the mean of its divisors is an integer number (122210529).

Almost surely, 2^244421057 is an apocalyptic number.

It is an amenable number.

244421057 is a deficient number, since it is larger than the sum of its proper divisors (1).

244421057 is an equidigital number, since it uses as much as digits as its factorization.

244421057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 244421057 is about 15633.9712485344. The cubic root of 244421057 is about 625.2392104071.

Adding to 244421057 its reverse (750124442), we get a palindrome (994545499).

The spelling of 244421057 in words is "two hundred forty-four million, four hundred twenty-one thousand, fifty-seven".