135149505 has 16 divisors (see below), whose sum is σ = 216818880. Its totient is φ = 71886528.

The previous prime is 135149501. The next prime is 135149513. The reversal of 135149505 is 505941531.

It is not a de Polignac number, because 135149505 - 2² = 135149501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135149501) 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, 6202 + ... + 17571.

It is an arithmetic number, because the mean of its divisors is an integer number (13551180).

Almost surely, 2^135149505 is an apocalyptic number.

135149505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135149505 is a deficient number, since it is larger than the sum of its proper divisors (81669375).

135149505 is a wasteful number, since it uses less digits than its factorization.

135149505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24160.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 135149505 is about 11625.3819292099. The cubic root of 135149505 is about 513.1820844765.

The spelling of 135149505 in words is "one hundred thirty-five million, one hundred forty-nine thousand, five hundred five".