264044513 has 2 divisors, whose sum is σ = 264044514. Its totient is φ = 264044512.

The previous prime is 264044509. The next prime is 264044549. The reversal of 264044513 is 315440462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261889489 + 2155024 = 16183^2 + 1468^2 .

It is a cyclic number.

It is not a de Polignac number, because 264044513 - 2² = 264044509 is a prime.

It is not a weakly prime, because it can be changed into another prime (264044503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132022256 + 132022257.

It is an arithmetic number, because the mean of its divisors is an integer number (132022257).

Almost surely, 2^264044513 is an apocalyptic number.

It is an amenable number.

264044513 is a deficient number, since it is larger than the sum of its proper divisors (1).

264044513 is an equidigital number, since it uses as much as digits as its factorization.

264044513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 264044513 is about 16249.4465444211. The cubic root of 264044513 is about 641.5429187648.

Adding to 264044513 its reverse (315440462), we get a palindrome (579484975).

The spelling of 264044513 in words is "two hundred sixty-four million, forty-four thousand, five hundred thirteen".