724851481 has 2 divisors, whose sum is σ = 724851482. Its totient is φ = 724851480.

The previous prime is 724851469. The next prime is 724851487. The reversal of 724851481 is 184158427.

724851481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484880400 + 239971081 = 22020^2 + 15491^2 .

It is an emirp because it is prime and its reverse (184158427) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724851481 is a prime.

It is a super-2 number, since 2×724851481² = 1050819339015786722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (724851487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362425740 + 362425741.

It is an arithmetic number, because the mean of its divisors is an integer number (362425741).

Almost surely, 2^724851481 is an apocalyptic number.

It is an amenable number.

724851481 is a deficient number, since it is larger than the sum of its proper divisors (1).

724851481 is an equidigital number, since it uses as much as digits as its factorization.

724851481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 40.

The square root of 724851481 is about 26923.0659658219. The cubic root of 724851481 is about 898.2895418531.

The spelling of 724851481 in words is "seven hundred twenty-four million, eight hundred fifty-one thousand, four hundred eighty-one".