265449871 has 2 divisors, whose sum is σ = 265449872. Its totient is φ = 265449870.

The previous prime is 265449823. The next prime is 265449929. The reversal of 265449871 is 178944562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265449871 - 2²⁵ = 231895439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265449571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132724935 + 132724936.

It is an arithmetic number, because the mean of its divisors is an integer number (132724936).

Almost surely, 2^265449871 is an apocalyptic number.

265449871 is a deficient number, since it is larger than the sum of its proper divisors (1).

265449871 is an equidigital number, since it uses as much as digits as its factorization.

265449871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 265449871 is about 16292.6324146836. The cubic root of 265449871 is about 642.6790941434.

It can be divided in two parts, 2654 and 49871, that added together give a palindrome (52525).

The spelling of 265449871 in words is "two hundred sixty-five million, four hundred forty-nine thousand, eight hundred seventy-one".