135289601 has 8 divisors (see below), whose sum is σ = 137893800. Its totient is φ = 132710400.

The previous prime is 135289597. The next prime is 135289619. The reversal of 135289601 is 106982531.

It can be written as a sum of positive squares in 4 ways, for example, as 89794576 + 45495025 = 9476^2 + 6745^2 .

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 135289601 - 2² = 135289597 is a prime.

It is a super-2 number, since 2×135289601² = 36606552277478402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135289631) 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, 4865 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (17236725).

Almost surely, 2^135289601 is an apocalyptic number.

It is an amenable number.

135289601 is a deficient number, since it is larger than the sum of its proper divisors (2604199).

135289601 is a wasteful number, since it uses less digits than its factorization.

135289601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12499.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 135289601 is about 11631.4058049747. The cubic root of 135289601 is about 513.3593447868.

The spelling of 135289601 in words is "one hundred thirty-five million, two hundred eighty-nine thousand, six hundred one".