135790591 has 8 divisors (see below), whose sum is σ = 137443824. Its totient is φ = 134142720.

The previous prime is 135790547. The next prime is 135790609. The reversal of 135790591 is 195097531.

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 135790591 - 2⁷ = 135790463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135790531) 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, 74076 + ... + 75886.

It is an arithmetic number, because the mean of its divisors is an integer number (17180478).

Almost surely, 2^135790591 is an apocalyptic number.

135790591 is a deficient number, since it is larger than the sum of its proper divisors (1653233).

135790591 is an equidigital number, since it uses as much as digits as its factorization.

135790591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 135790591 is about 11652.9219940751. The cubic root of 135790591 is about 513.9922367069.

The spelling of 135790591 in words is "one hundred thirty-five million, seven hundred ninety thousand, five hundred ninety-one".