730730251 has 2 divisors, whose sum is σ = 730730252. Its totient is φ = 730730250.

The previous prime is 730730201. The next prime is 730730293. The reversal of 730730251 is 152037037.

730730251 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 is an emirp because it is prime and its reverse (152037037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 730730251 - 2¹⁷ = 730599179 is a prime.

It is not a weakly prime, because it can be changed into another prime (730730201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365365125 + 365365126.

It is an arithmetic number, because the mean of its divisors is an integer number (365365126).

Almost surely, 2^730730251 is an apocalyptic number.

730730251 is a deficient number, since it is larger than the sum of its proper divisors (1).

730730251 is an equidigital number, since it uses as much as digits as its factorization.

730730251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 730730251 is about 27032.0226953145. The cubic root of 730730251 is about 900.7114748598.

Adding to 730730251 its reverse (152037037), we get a palindrome (882767288).

The spelling of 730730251 in words is "seven hundred thirty million, seven hundred thirty thousand, two hundred fifty-one".