135404505 has 24 divisors (see below), whose sum is σ = 236071368. Its totient is φ = 71794176.

The previous prime is 135404501. The next prime is 135404513. The reversal of 135404505 is 505404531.

It can be written as a sum of positive squares in 4 ways, for example, as 21790224 + 113614281 = 4668^2 + 10659^2 .

It is not a de Polignac number, because 135404505 - 2² = 135404501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135404501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 912 + ... + 16481.

It is an arithmetic number, because the mean of its divisors is an integer number (9836307).

Almost surely, 2^135404505 is an apocalyptic number.

135404505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135404505 is a deficient number, since it is larger than the sum of its proper divisors (100666863).

135404505 is a wasteful number, since it uses less digits than its factorization.

135404505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17577 (or 17574 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 135404505 is about 11636.3441423842. The cubic root of 135404505 is about 513.5046389064.

The spelling of 135404505 in words is "one hundred thirty-five million, four hundred four thousand, five hundred five".