724872541 has 2 divisors, whose sum is σ = 724872542. Its totient is φ = 724872540.

The previous prime is 724872539. The next prime is 724872557. The reversal of 724872541 is 145278427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 529460100 + 195412441 = 23010^2 + 13979^2 .

It is a cyclic number.

It is not a de Polignac number, because 724872541 - 2¹ = 724872539 is a prime.

Together with 724872539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 724872494 and 724872503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724872581) 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, 362436270 + 362436271.

It is an arithmetic number, because the mean of its divisors is an integer number (362436271).

Almost surely, 2^724872541 is an apocalyptic number.

It is an amenable number.

724872541 is a deficient number, since it is larger than the sum of its proper divisors (1).

724872541 is an equidigital number, since it uses as much as digits as its factorization.

724872541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125440, while the sum is 40.

The square root of 724872541 is about 26923.4570774260. The cubic root of 724872541 is about 898.2982414719.

The spelling of 724872541 in words is "seven hundred twenty-four million, eight hundred seventy-two thousand, five hundred forty-one".