135541523 has 8 divisors (see below), whose sum is σ = 146063568. Its totient is φ = 125033184.

The previous prime is 135541519. The next prime is 135541529. The reversal of 135541523 is 325145531.

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 135541523 - 2² = 135541519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135541529) 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, 27536 + ... + 32082.

It is an arithmetic number, because the mean of its divisors is an integer number (18257946).

Almost surely, 2^135541523 is an apocalyptic number.

135541523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135541523 is a deficient number, since it is larger than the sum of its proper divisors (10522045).

135541523 is a wasteful number, since it uses less digits than its factorization.

135541523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853.

The product of its digits is 9000, while the sum is 29.

The square root of 135541523 is about 11642.2301557734. The cubic root of 135541523 is about 513.6777883876.

The spelling of 135541523 in words is "one hundred thirty-five million, five hundred forty-one thousand, five hundred twenty-three".