135207601 has 4 divisors (see below), whose sum is σ = 135894132. Its totient is φ = 134521072.

The previous prime is 135207577. The next prime is 135207617. The reversal of 135207601 is 106702531.

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 110754576 + 24453025 = 10524^2 + 4945^2 .

It is a cyclic number.

It is not a de Polignac number, because 135207601 - 2¹⁵ = 135174833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135207641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342970 + ... + 343363.

It is an arithmetic number, because the mean of its divisors is an integer number (33973533).

Almost surely, 2^135207601 is an apocalyptic number.

It is an amenable number.

135207601 is a deficient number, since it is larger than the sum of its proper divisors (686531).

135207601 is an equidigital number, since it uses as much as digits as its factorization.

135207601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686530.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 135207601 is about 11627.8803313416. The cubic root of 135207601 is about 513.2556068951.

The spelling of 135207601 in words is "one hundred thirty-five million, two hundred seven thousand, six hundred one".