265415287 has 2 divisors, whose sum is σ = 265415288. Its totient is φ = 265415286.

The previous prime is 265415261. The next prime is 265415299. The reversal of 265415287 is 782514562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265415287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265415257) 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, 132707643 + 132707644.

It is an arithmetic number, because the mean of its divisors is an integer number (132707644).

Almost surely, 2^265415287 is an apocalyptic number.

265415287 is a deficient number, since it is larger than the sum of its proper divisors (1).

265415287 is an equidigital number, since it uses as much as digits as its factorization.

265415287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The square root of 265415287 is about 16291.5710414926. The cubic root of 265415287 is about 642.6511825594.

The spelling of 265415287 in words is "two hundred sixty-five million, four hundred fifteen thousand, two hundred eighty-seven".