135853523 has 6 divisors (see below), whose sum is σ = 147107844. Its totient is φ = 125403096.

The previous prime is 135853507. The next prime is 135853561. The reversal of 135853523 is 325358531.

135853523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135853523 - 2⁴ = 135853507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135853573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401765 + ... + 402102.

It is an arithmetic number, because the mean of its divisors is an integer number (24517974).

Almost surely, 2^135853523 is an apocalyptic number.

135853523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135853523 is a deficient number, since it is larger than the sum of its proper divisors (11254321).

135853523 is an equidigital number, since it uses as much as digits as its factorization.

135853523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803893 (or 803880 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 135853523 is about 11655.6219482274. The cubic root of 135853523 is about 514.0716274892.

The spelling of 135853523 in words is "one hundred thirty-five million, eight hundred fifty-three thousand, five hundred twenty-three".