135244491 has 4 divisors (see below), whose sum is σ = 180325992. Its totient is φ = 90162992.

The previous prime is 135244463. The next prime is 135244507. The reversal of 135244491 is 194442531.

135244491 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.

It is a cyclic number.

It is not a de Polignac number, because 135244491 - 2¹⁸ = 134982347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135244411) 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, 22540746 + ... + 22540751.

It is an arithmetic number, because the mean of its divisors is an integer number (45081498).

Almost surely, 2^135244491 is an apocalyptic number.

135244491 is a deficient number, since it is larger than the sum of its proper divisors (45081501).

135244491 is an equidigital number, since it uses as much as digits as its factorization.

135244491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45081500.

The product of its digits is 17280, while the sum is 33.

The square root of 135244491 is about 11629.4664967917. The cubic root of 135244491 is about 513.3022814841.

The spelling of 135244491 in words is "one hundred thirty-five million, two hundred forty-four thousand, four hundred ninety-one".