265481539 has 2 divisors, whose sum is σ = 265481540. Its totient is φ = 265481538.

The previous prime is 265481467. The next prime is 265481543. The reversal of 265481539 is 935184562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265481539 - 2¹³ = 265473347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265481495 and 265481504.

It is not a weakly prime, because it can be changed into another prime (265481039) 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, 132740769 + 132740770.

It is an arithmetic number, because the mean of its divisors is an integer number (132740770).

Almost surely, 2^265481539 is an apocalyptic number.

265481539 is a deficient number, since it is larger than the sum of its proper divisors (1).

265481539 is an equidigital number, since it uses as much as digits as its factorization.

265481539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 43.

The square root of 265481539 is about 16293.6042360185. The cubic root of 265481539 is about 642.7046501956.

The spelling of 265481539 in words is "two hundred sixty-five million, four hundred eighty-one thousand, five hundred thirty-nine".