135523404 has 36 divisors (see below), whose sum is σ = 342984096. Its totient is φ = 45120288.

The previous prime is 135523403. The next prime is 135523411. The reversal of 135523404 is 404325531.

135523404 is a `hidden beast` number, since 135 + 523 + 4 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (135523403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38002 + ... + 41414.

It is an arithmetic number, because the mean of its divisors is an integer number (9527336).

Almost surely, 2^135523404 is an apocalyptic number.

It is an amenable number.

135523404 is an abundant number, since it is smaller than the sum of its proper divisors (207460692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135523404 is a wasteful number, since it uses less digits than its factorization.

135523404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526 (or 4521 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 135523404 is about 11641.4519712964. The cubic root of 135523404 is about 513.6548981263.

Adding to 135523404 its reverse (404325531), we get a palindrome (539848935).

The spelling of 135523404 in words is "one hundred thirty-five million, five hundred twenty-three thousand, four hundred four".