135715205 has 8 divisors (see below), whose sum is σ = 162955800. Its totient is φ = 108507136.

The previous prime is 135715201. The next prime is 135715231. The reversal of 135715205 is 502517531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17297281 + 118417924 = 4159^2 + 10882^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 135715205 - 2² = 135715201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135715201) 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, 2261 + ... + 16629.

It is an arithmetic number, because the mean of its divisors is an integer number (20369475).

Almost surely, 2^135715205 is an apocalyptic number.

It is an amenable number.

135715205 is a deficient number, since it is larger than the sum of its proper divisors (27240595).

135715205 is a wasteful number, since it uses less digits than its factorization.

135715205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16263.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 135715205 is about 11649.6869056640. The cubic root of 135715205 is about 513.8971024978.

The spelling of 135715205 in words is "one hundred thirty-five million, seven hundred fifteen thousand, two hundred five".