135051905 has 12 divisors (see below), whose sum is σ = 171043092. Its totient is φ = 102353760.

The previous prime is 135051901. The next prime is 135051907. The reversal of 135051905 is 509150531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54626881 + 80425024 = 7391^2 + 8968^2 .

It is not a de Polignac number, because 135051905 - 2² = 135051901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135051901) 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, 35606 + ... + 39215.

It is an arithmetic number, because the mean of its divisors is an integer number (14253591).

Almost surely, 2^135051905 is an apocalyptic number.

It is an amenable number.

135051905 is a deficient number, since it is larger than the sum of its proper divisors (35991187).

135051905 is an equidigital number, since it uses as much as digits as its factorization.

135051905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74864 (or 74845 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 29.

The square root of 135051905 is about 11621.1834595277. The cubic root of 135051905 is about 513.0585209874.

The spelling of 135051905 in words is "one hundred thirty-five million, fifty-one thousand, nine hundred five".