264820571 has 2 divisors, whose sum is σ = 264820572. Its totient is φ = 264820570.

The previous prime is 264820481. The next prime is 264820579. The reversal of 264820571 is 175028462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264820571 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264820579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132410285 + 132410286.

It is an arithmetic number, because the mean of its divisors is an integer number (132410286).

Almost surely, 2^264820571 is an apocalyptic number.

264820571 is a deficient number, since it is larger than the sum of its proper divisors (1).

264820571 is an equidigital number, since it uses as much as digits as its factorization.

264820571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 264820571 is about 16273.3085449763. The cubic root of 264820571 is about 642.1708274622.

The spelling of 264820571 in words is "two hundred sixty-four million, eight hundred twenty thousand, five hundred seventy-one".