135550447 has 4 divisors (see below), whose sum is σ = 137573656. Its totient is φ = 133527240.

The previous prime is 135550439. The next prime is 135550451. The reversal of 135550447 is 744055531.

135550447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744055531 = 43 ⋅17303617.

It is a cyclic number.

It is not a de Polignac number, because 135550447 - 2³ = 135550439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135550417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011504 + ... + 1011637.

It is an arithmetic number, because the mean of its divisors is an integer number (34393414).

Almost surely, 2^135550447 is an apocalyptic number.

135550447 is a deficient number, since it is larger than the sum of its proper divisors (2023209).

135550447 is an equidigital number, since it uses as much as digits as its factorization.

135550447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023208.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 135550447 is about 11642.6134093682. The cubic root of 135550447 is about 513.6890615873.

The spelling of 135550447 in words is "one hundred thirty-five million, five hundred fifty thousand, four hundred forty-seven".