135520519 has 2 divisors, whose sum is σ = 135520520. Its totient is φ = 135520518.

The previous prime is 135520507. The next prime is 135520571. The reversal of 135520519 is 915025531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135520519 - 2¹⁷ = 135389447 is a prime.

It is a super-2 number, since 2×135520519² = 36731622140058722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135520579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67760259 + 67760260.

It is an arithmetic number, because the mean of its divisors is an integer number (67760260).

Almost surely, 2^135520519 is an apocalyptic number.

135520519 is a deficient number, since it is larger than the sum of its proper divisors (1).

135520519 is an equidigital number, since it uses as much as digits as its factorization.

135520519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 135520519 is about 11641.3280599767. The cubic root of 135520519 is about 513.6512532334.

The spelling of 135520519 in words is "one hundred thirty-five million, five hundred twenty thousand, five hundred nineteen".