249007513 has 2 divisors, whose sum is σ = 249007514. Its totient is φ = 249007512.

The previous prime is 249007489. The next prime is 249007523. The reversal of 249007513 is 315700942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171426649 + 77580864 = 13093^2 + 8808^2 .

It is a cyclic number.

It is not a de Polignac number, because 249007513 - 2⁵ = 249007481 is a prime.

It is not a weakly prime, because it can be changed into another prime (249007523) 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, 124503756 + 124503757.

It is an arithmetic number, because the mean of its divisors is an integer number (124503757).

Almost surely, 2^249007513 is an apocalyptic number.

It is an amenable number.

249007513 is a deficient number, since it is larger than the sum of its proper divisors (1).

249007513 is an equidigital number, since it uses as much as digits as its factorization.

249007513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 249007513 is about 15779.9718947785. The cubic root of 249007513 is about 629.1257825009.

The spelling of 249007513 in words is "two hundred forty-nine million, seven thousand, five hundred thirteen".