135523101 has 16 divisors (see below), whose sum is σ = 206696448. Its totient is φ = 77372400.

The previous prime is 135523051. The next prime is 135523123. The reversal of 135523101 is 101325531.

135523101 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 135523101 - 2⁷ = 135522973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135523601) 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, 29596 + ... + 33866.

It is an arithmetic number, because the mean of its divisors is an integer number (12918528).

Almost surely, 2^135523101 is an apocalyptic number.

It is an amenable number.

135523101 is a deficient number, since it is larger than the sum of its proper divisors (71173347).

135523101 is a wasteful number, since it uses less digits than its factorization.

135523101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 135523101 is about 11641.4389574485. The cubic root of 135523101 is about 513.6545153202.

Adding to 135523101 its reverse (101325531), we get a palindrome (236848632).

It can be divided in two parts, 13552 and 3101, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 135523101 in words is "one hundred thirty-five million, five hundred twenty-three thousand, one hundred one".