724959251 has 2 divisors, whose sum is σ = 724959252. Its totient is φ = 724959250.

The previous prime is 724959227. The next prime is 724959259. The reversal of 724959251 is 152959427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724959251 is a prime.

It is a super-2 number, since 2×724959251² = 1051131831220962002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (724959259) 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, 362479625 + 362479626.

It is an arithmetic number, because the mean of its divisors is an integer number (362479626).

Almost surely, 2^724959251 is an apocalyptic number.

724959251 is a deficient number, since it is larger than the sum of its proper divisors (1).

724959251 is an equidigital number, since it uses as much as digits as its factorization.

724959251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 724959251 is about 26925.0673351061. The cubic root of 724959251 is about 898.3340584974.

The spelling of 724959251 in words is "seven hundred twenty-four million, nine hundred fifty-nine thousand, two hundred fifty-one".