135309597 has 16 divisors (see below), whose sum is σ = 184058880. Its totient is φ = 88393392.

The previous prime is 135309589. The next prime is 135309619. The reversal of 135309597 is 795903531.

It is a happy number.

It is not a de Polignac number, because 135309597 - 2³ = 135309589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135309197) 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, 63918 + ... + 66000.

It is an arithmetic number, because the mean of its divisors is an integer number (11503680).

Almost surely, 2^135309597 is an apocalyptic number.

It is an amenable number.

135309597 is a deficient number, since it is larger than the sum of its proper divisors (48749283).

135309597 is a wasteful number, since it uses less digits than its factorization.

135309597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512.

The product of its (nonzero) digits is 127575, while the sum is 42.

The square root of 135309597 is about 11632.2653425719. The cubic root of 135309597 is about 513.3846352937.

The spelling of 135309597 in words is "one hundred thirty-five million, three hundred nine thousand, five hundred ninety-seven".