265054891 has 2 divisors, whose sum is σ = 265054892. Its totient is φ = 265054890.

The previous prime is 265054879. The next prime is 265054903. The reversal of 265054891 is 198450562.

It is a balanced prime because it is at equal distance from previous prime (265054879) and next prime (265054903).

It is a cyclic number.

It is not a de Polignac number, because 265054891 - 2⁷ = 265054763 is a prime.

It is not a weakly prime, because it can be changed into another prime (265024891) 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, 132527445 + 132527446.

It is an arithmetic number, because the mean of its divisors is an integer number (132527446).

Almost surely, 2^265054891 is an apocalyptic number.

265054891 is a deficient number, since it is larger than the sum of its proper divisors (1).

265054891 is an equidigital number, since it uses as much as digits as its factorization.

265054891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 265054891 is about 16280.5064724658. The cubic root of 265054891 is about 642.3601746727.

The spelling of 265054891 in words is "two hundred sixty-five million, fifty-four thousand, eight hundred ninety-one".