724518253 has 2 divisors, whose sum is σ = 724518254. Its totient is φ = 724518252.

The previous prime is 724518247. The next prime is 724518269. The reversal of 724518253 is 352815427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459544969 + 264973284 = 21437^2 + 16278^2 .

It is a cyclic number.

It is not a de Polignac number, because 724518253 - 2⁹ = 724517741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724518233) 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 as a sum of consecutive naturals, namely, 362259126 + 362259127.

It is an arithmetic number, because the mean of its divisors is an integer number (362259127).

Almost surely, 2^724518253 is an apocalyptic number.

It is an amenable number.

724518253 is a deficient number, since it is larger than the sum of its proper divisors (1).

724518253 is an equidigital number, since it uses as much as digits as its factorization.

724518253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 37.

The square root of 724518253 is about 26916.8767318944. The cubic root of 724518253 is about 898.1518671630.

The spelling of 724518253 in words is "seven hundred twenty-four million, five hundred eighteen thousand, two hundred fifty-three".