72244241 has 2 divisors, whose sum is σ = 72244242. Its totient is φ = 72244240.

The previous prime is 72244201. The next prime is 72244283. The reversal of 72244241 is 14244227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44943616 + 27300625 = 6704^2 + 5225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72244241 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72244241.

It is not a weakly prime, because it can be changed into another prime (72244201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36122120 + 36122121.

It is an arithmetic number, because the mean of its divisors is an integer number (36122121).

Almost surely, 2^72244241 is an apocalyptic number.

It is an amenable number.

72244241 is a deficient number, since it is larger than the sum of its proper divisors (1).

72244241 is an equidigital number, since it uses as much as digits as its factorization.

72244241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 26.

The square root of 72244241 is about 8499.6612285432. The cubic root of 72244241 is about 416.4866427283.

Adding to 72244241 its reverse (14244227), we get a palindrome (86488468).

The spelling of 72244241 in words is "seventy-two million, two hundred forty-four thousand, two hundred forty-one".