264505447 has 2 divisors, whose sum is σ = 264505448. Its totient is φ = 264505446.

The previous prime is 264505421. The next prime is 264505471. The reversal of 264505447 is 744505462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264505447 - 2¹¹ = 264503399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264505477) 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, 132252723 + 132252724.

It is an arithmetic number, because the mean of its divisors is an integer number (132252724).

Almost surely, 2^264505447 is an apocalyptic number.

264505447 is a deficient number, since it is larger than the sum of its proper divisors (1).

264505447 is an equidigital number, since it uses as much as digits as its factorization.

264505447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 37.

The square root of 264505447 is about 16263.6234277605. The cubic root of 264505447 is about 641.9160086871.

The spelling of 264505447 in words is "two hundred sixty-four million, five hundred five thousand, four hundred forty-seven".