135053443 has 4 divisors (see below), whose sum is σ = 154346800. Its totient is φ = 115760088.

The previous prime is 135053417. The next prime is 135053461. The reversal of 135053443 is 344350531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344350531 = 7 ⋅49192933.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135053443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135056443) 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, 9646668 + ... + 9646681.

It is an arithmetic number, because the mean of its divisors is an integer number (38586700).

Almost surely, 2^135053443 is an apocalyptic number.

135053443 is a deficient number, since it is larger than the sum of its proper divisors (19293357).

135053443 is an equidigital number, since it uses as much as digits as its factorization.

135053443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19293356.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 135053443 is about 11621.2496316016. The cubic root of 135053443 is about 513.0604685867.

The spelling of 135053443 in words is "one hundred thirty-five million, fifty-three thousand, four hundred forty-three".