135331445 has 4 divisors (see below), whose sum is σ = 162397740. Its totient is φ = 108265152.

The previous prime is 135331423. The next prime is 135331451. The reversal of 135331445 is 544133531.

135331445 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: 544133531 = 1277 ⋅426103.

It can be written as a sum of positive squares in 2 ways, for example, as 72573361 + 62758084 = 8519^2 + 7922^2 .

It is a cyclic number.

It is not a de Polignac number, because 135331445 - 2²² = 131137141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13533140 + ... + 13533149.

It is an arithmetic number, because the mean of its divisors is an integer number (40599435).

Almost surely, 2^135331445 is an apocalyptic number.

It is an amenable number.

135331445 is a deficient number, since it is larger than the sum of its proper divisors (27066295).

135331445 is an equidigital number, since it uses as much as digits as its factorization.

135331445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27066294.

The product of its digits is 10800, while the sum is 29.

The square root of 135331445 is about 11633.2044166687. The cubic root of 135331445 is about 513.4122653217.

Adding to 135331445 its reverse (544133531), we get a palindrome (679464976).

The spelling of 135331445 in words is "one hundred thirty-five million, three hundred thirty-one thousand, four hundred forty-five".