265352891 has 2 divisors, whose sum is σ = 265352892. Its totient is φ = 265352890.

The previous prime is 265352887. The next prime is 265352903. The reversal of 265352891 is 198253562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265352891 - 2² = 265352887 is a prime.

It is not a weakly prime, because it can be changed into another prime (265355891) 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, 132676445 + 132676446.

It is an arithmetic number, because the mean of its divisors is an integer number (132676446).

Almost surely, 2^265352891 is an apocalyptic number.

265352891 is a deficient number, since it is larger than the sum of its proper divisors (1).

265352891 is an equidigital number, since it uses as much as digits as its factorization.

265352891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 41.

The square root of 265352891 is about 16289.6559509402. The cubic root of 265352891 is about 642.6008187110.

The spelling of 265352891 in words is "two hundred sixty-five million, three hundred fifty-two thousand, eight hundred ninety-one".