135507533 has 16 divisors (see below), whose sum is σ = 158699520. Its totient is φ = 113291376.

The previous prime is 135507529. The next prime is 135507553. The reversal of 135507533 is 335705531.

It is a cyclic number.

It is not a de Polignac number, because 135507533 - 2² = 135507529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135507533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135507523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137360 + ... + 138342.

It is an arithmetic number, because the mean of its divisors is an integer number (9918720).

Almost surely, 2^135507533 is an apocalyptic number.

It is an amenable number.

135507533 is a deficient number, since it is larger than the sum of its proper divisors (23191987).

135507533 is an equidigital number, since it uses as much as digits as its factorization.

135507533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456.

The product of its (nonzero) digits is 23625, while the sum is 32.

The square root of 135507533 is about 11640.7702923819. The cubic root of 135507533 is about 513.6348461528.

The spelling of 135507533 in words is "one hundred thirty-five million, five hundred seven thousand, five hundred thirty-three".