135615505 has 8 divisors (see below), whose sum is σ = 165406824. Its totient is φ = 106713600.

The previous prime is 135615497. The next prime is 135615541. The reversal of 135615505 is 505516531.

It can be written as a sum of positive squares in 4 ways, for example, as 1449616 + 134165889 = 1204^2 + 11583^2 .

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

It is not a de Polignac number, because 135615505 - 2³ = 135615497 is a prime.

It is a Duffinian number.

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, 222016 + ... + 222625.

It is an arithmetic number, because the mean of its divisors is an integer number (20675853).

Almost surely, 2^135615505 is an apocalyptic number.

It is an amenable number.

135615505 is a deficient number, since it is larger than the sum of its proper divisors (29791319).

135615505 is an equidigital number, since it uses as much as digits as its factorization.

135615505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444707.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 135615505 is about 11645.4070345351. The cubic root of 135615505 is about 513.7712308424.

It can be divided in two parts, 1356 and 15505, that added together give a palindrome (16861).

The spelling of 135615505 in words is "one hundred thirty-five million, six hundred fifteen thousand, five hundred five".