135525081 has 32 divisors (see below), whose sum is σ = 196007040. Its totient is φ = 83026944.

The previous prime is 135525079. The next prime is 135525083. The reversal of 135525081 is 180525531.

135525081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (135525079) and next prime (135525083).

It is not a de Polignac number, because 135525081 - 2¹ = 135525079 is a prime.

It is a super-2 number, since 2×135525081² = 36734095160113122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135525083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341175 + ... + 341571.

It is an arithmetic number, because the mean of its divisors is an integer number (6125220).

Almost surely, 2^135525081 is an apocalyptic number.

It is an amenable number.

135525081 is a deficient number, since it is larger than the sum of its proper divisors (60481959).

135525081 is a wasteful number, since it uses less digits than its factorization.

135525081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 135525081 is about 11641.5239981714. The cubic root of 135525081 is about 513.6570168150.

The spelling of 135525081 in words is "one hundred thirty-five million, five hundred twenty-five thousand, eighty-one".