264155447 has 2 divisors, whose sum is σ = 264155448. Its totient is φ = 264155446.

The previous prime is 264155443. The next prime is 264155477. The reversal of 264155447 is 744551462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264155447 - 2² = 264155443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264155447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264155443) 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, 132077723 + 132077724.

It is an arithmetic number, because the mean of its divisors is an integer number (132077724).

Almost surely, 2^264155447 is an apocalyptic number.

264155447 is a deficient number, since it is larger than the sum of its proper divisors (1).

264155447 is an equidigital number, since it uses as much as digits as its factorization.

264155447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 38.

The square root of 264155447 is about 16252.8596560728. The cubic root of 264155447 is about 641.6327507870.

The spelling of 264155447 in words is "two hundred sixty-four million, one hundred fifty-five thousand, four hundred forty-seven".