135509297 has 16 divisors (see below), whose sum is σ = 172879872. Its totient is φ = 103133520.

The previous prime is 135509279. The next prime is 135509327. The reversal of 135509297 is 792905531.

It is not a de Polignac number, because 135509297 - 2⁶ = 135509233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135509237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17153 + ... + 23774.

It is an arithmetic number, because the mean of its divisors is an integer number (10804992).

Almost surely, 2^135509297 is an apocalyptic number.

It is an amenable number.

135509297 is a deficient number, since it is larger than the sum of its proper divisors (37370575).

135509297 is a wasteful number, since it uses less digits than its factorization.

135509297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40988.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 135509297 is about 11640.8460603171. The cubic root of 135509297 is about 513.6370749291.

The spelling of 135509297 in words is "one hundred thirty-five million, five hundred nine thousand, two hundred ninety-seven".