264643529 has 2 divisors, whose sum is σ = 264643530. Its totient is φ = 264643528.

The previous prime is 264643459. The next prime is 264643541. The reversal of 264643529 is 925346462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213949129 + 50694400 = 14627^2 + 7120^2 .

It is a cyclic number.

It is not a de Polignac number, because 264643529 - 2¹² = 264639433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264643549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132321764 + 132321765.

It is an arithmetic number, because the mean of its divisors is an integer number (132321765).

Almost surely, 2^264643529 is an apocalyptic number.

It is an amenable number.

264643529 is a deficient number, since it is larger than the sum of its proper divisors (1).

264643529 is an equidigital number, since it uses as much as digits as its factorization.

264643529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 41.

The square root of 264643529 is about 16267.8679918421. The cubic root of 264643529 is about 642.0276908570.

The spelling of 264643529 in words is "two hundred sixty-four million, six hundred forty-three thousand, five hundred twenty-nine".