135533566 has 8 divisors (see below), whose sum is σ = 232343280. Its totient is φ = 58085808.

The previous prime is 135533551. The next prime is 135533569. The reversal of 135533566 is 665335531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135533569) 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 3 ways as a sum of consecutive naturals, for example, 4840471 + ... + 4840498.

It is an arithmetic number, because the mean of its divisors is an integer number (29042910).

Almost surely, 2^135533566 is an apocalyptic number.

135533566 is a deficient number, since it is larger than the sum of its proper divisors (96809714).

135533566 is an equidigital number, since it uses as much as digits as its factorization.

135533566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9680978.

The product of its digits is 121500, while the sum is 37.

The square root of 135533566 is about 11641.8884206988. Note that the first 3 decimals coincide. The cubic root of 135533566 is about 513.6677363286.

The spelling of 135533566 in words is "one hundred thirty-five million, five hundred thirty-three thousand, five hundred sixty-six".