265241791 has 2 divisors, whose sum is σ = 265241792. Its totient is φ = 265241790.

The previous prime is 265241771. The next prime is 265241807. The reversal of 265241791 is 197142562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265241791 - 2¹¹ = 265239743 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265241791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265241731) 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, 132620895 + 132620896.

It is an arithmetic number, because the mean of its divisors is an integer number (132620896).

Almost surely, 2^265241791 is an apocalyptic number.

265241791 is a deficient number, since it is larger than the sum of its proper divisors (1).

265241791 is an equidigital number, since it uses as much as digits as its factorization.

265241791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 265241791 is about 16286.2454543704. The cubic root of 265241791 is about 642.5111231653.

The spelling of 265241791 in words is "two hundred sixty-five million, two hundred forty-one thousand, seven hundred ninety-one".