135022523 has 4 divisors (see below), whose sum is σ = 136539720. Its totient is φ = 133505328.

The previous prime is 135022519. The next prime is 135022541. The reversal of 135022523 is 325220531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135022523 - 2² = 135022519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135022543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758465 + ... + 758642.

It is an arithmetic number, because the mean of its divisors is an integer number (34134930).

Almost surely, 2^135022523 is an apocalyptic number.

135022523 is a deficient number, since it is larger than the sum of its proper divisors (1517197).

135022523 is an equidigital number, since it uses as much as digits as its factorization.

135022523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517196.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 135022523 is about 11619.9192337985. The cubic root of 135022523 is about 513.0213111486.

The spelling of 135022523 in words is "one hundred thirty-five million, twenty-two thousand, five hundred twenty-three".