264009517 has 2 divisors, whose sum is σ = 264009518. Its totient is φ = 264009516.

The previous prime is 264009469. The next prime is 264009523. The reversal of 264009517 is 715900462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162282121 + 101727396 = 12739^2 + 10086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264009517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264009587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132004758 + 132004759.

It is an arithmetic number, because the mean of its divisors is an integer number (132004759).

Almost surely, 2^264009517 is an apocalyptic number.

It is an amenable number.

264009517 is a deficient number, since it is larger than the sum of its proper divisors (1).

264009517 is an equidigital number, since it uses as much as digits as its factorization.

264009517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 264009517 is about 16248.3696720625. The cubic root of 264009517 is about 641.5145745187.

Adding to 264009517 its reverse (715900462), we get a palindrome (979909979).

The spelling of 264009517 in words is "two hundred sixty-four million, nine thousand, five hundred seventeen".