135615097 has 4 divisors (see below), whose sum is σ = 135783540. Its totient is φ = 135446656.

The previous prime is 135615089. The next prime is 135615131. The reversal of 135615097 is 790516531.

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 45441081 + 90174016 = 6741^2 + 9496^2 .

It is a cyclic number.

It is not a de Polignac number, because 135615097 - 2³ = 135615089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135615047) 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, 83008 + ... + 84625.

It is an arithmetic number, because the mean of its divisors is an integer number (33945885).

Almost surely, 2^135615097 is an apocalyptic number.

It is an amenable number.

135615097 is a deficient number, since it is larger than the sum of its proper divisors (168443).

135615097 is an equidigital number, since it uses as much as digits as its factorization.

135615097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168442.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 135615097 is about 11645.3895168861. The cubic root of 135615097 is about 513.7707156140.

The spelling of 135615097 in words is "one hundred thirty-five million, six hundred fifteen thousand, ninety-seven".