244256513 has 2 divisors, whose sum is σ = 244256514. Its totient is φ = 244256512.

The previous prime is 244256491. The next prime is 244256539. The reversal of 244256513 is 315652442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205406224 + 38850289 = 14332^2 + 6233^2 .

It is a cyclic number.

It is not a de Polignac number, because 244256513 - 2¹² = 244252417 is a prime.

It is a super-2 number, since 2×244256513² = 119322488285838338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 244256513.

It is not a weakly prime, because it can be changed into another prime (244256563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122128256 + 122128257.

It is an arithmetic number, because the mean of its divisors is an integer number (122128257).

Almost surely, 2^244256513 is an apocalyptic number.

It is an amenable number.

244256513 is a deficient number, since it is larger than the sum of its proper divisors (1).

244256513 is an equidigital number, since it uses as much as digits as its factorization.

244256513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 32.

The square root of 244256513 is about 15628.7079760292. The cubic root of 244256513 is about 625.0988754503.

The spelling of 244256513 in words is "two hundred forty-four million, two hundred fifty-six thousand, five hundred thirteen".