264249971 has 2 divisors, whose sum is σ = 264249972. Its totient is φ = 264249970.

The previous prime is 264249913. The next prime is 264249977. The reversal of 264249971 is 179942462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264249971 - 2¹⁰ = 264248947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264249977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132124985 + 132124986.

It is an arithmetic number, because the mean of its divisors is an integer number (132124986).

Almost surely, 2^264249971 is an apocalyptic number.

264249971 is a deficient number, since it is larger than the sum of its proper divisors (1).

264249971 is an equidigital number, since it uses as much as digits as its factorization.

264249971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 264249971 is about 16255.7673150178. The cubic root of 264249971 is about 641.7092744931.

The spelling of 264249971 in words is "two hundred sixty-four million, two hundred forty-nine thousand, nine hundred seventy-one".