135215061 has 8 divisors (see below), whose sum is σ = 180864000. Its totient is φ = 89854752.

The previous prime is 135215033. The next prime is 135215083. The reversal of 135215061 is 160512531.

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

It is not a de Polignac number, because 135215061 - 2⁵ = 135215029 is a prime.

It is a super-2 number, since 2×135215061² = 36566225442467442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135215261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71061 + ... + 72938.

It is an arithmetic number, because the mean of its divisors is an integer number (22608000).

Almost surely, 2^135215061 is an apocalyptic number.

It is an amenable number.

135215061 is a deficient number, since it is larger than the sum of its proper divisors (45648939).

135215061 is a wasteful number, since it uses less digits than its factorization.

135215061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144315.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 135215061 is about 11628.2011076520. The cubic root of 135215061 is about 513.2650462471.

Adding to 135215061 its reverse (160512531), we get a palindrome (295727592).

The spelling of 135215061 in words is "one hundred thirty-five million, two hundred fifteen thousand, sixty-one".