135229601 has 4 divisors (see below), whose sum is σ = 145631892. Its totient is φ = 124827312.

The previous prime is 135229583. The next prime is 135229609. The reversal of 135229601 is 106922531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22848400 + 112381201 = 4780^2 + 10601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135229601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135229609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5201126 + ... + 5201151.

It is an arithmetic number, because the mean of its divisors is an integer number (36407973).

Almost surely, 2^135229601 is an apocalyptic number.

It is an amenable number.

135229601 is a deficient number, since it is larger than the sum of its proper divisors (10402291).

135229601 is a wasteful number, since it uses less digits than its factorization.

135229601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10402290.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 135229601 is about 11628.8262950308. The cubic root of 135229601 is about 513.2834431284.

The spelling of 135229601 in words is "one hundred thirty-five million, two hundred twenty-nine thousand, six hundred one".