135615506 has 16 divisors (see below), whose sum is σ = 221333784. Its totient is φ = 61945344.

The previous prime is 135615497. The next prime is 135615541. The reversal of 135615506 is 605516531.

It can be written as a sum of positive squares in 4 ways, for example, as 102839881 + 32775625 = 10141^2 + 5725^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24365 + ... + 29408.

Almost surely, 2^135615506 is an apocalyptic number.

135615506 is a deficient number, since it is larger than the sum of its proper divisors (85718278).

135615506 is a wasteful number, since it uses less digits than its factorization.

135615506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53885.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 135615506 is about 11645.4070774705. The cubic root of 135615506 is about 513.7712321052.

The spelling of 135615506 in words is "one hundred thirty-five million, six hundred fifteen thousand, five hundred six".