135445491 has 6 divisors (see below), whose sum is σ = 195643500. Its totient is φ = 90296988.

The previous prime is 135445489. The next prime is 135445501. The reversal of 135445491 is 194544531.

It is a happy number.

It is not a de Polignac number, because 135445491 - 2¹ = 135445489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135445481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7524741 + ... + 7524758.

It is an arithmetic number, because the mean of its divisors is an integer number (32607250).

Almost surely, 2^135445491 is an apocalyptic number.

135445491 is a deficient number, since it is larger than the sum of its proper divisors (60198009).

135445491 is a wasteful number, since it uses less digits than its factorization.

135445491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15049505 (or 15049502 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 135445491 is about 11638.1051292725. The cubic root of 135445491 is about 513.5564451048.

The spelling of 135445491 in words is "one hundred thirty-five million, four hundred forty-five thousand, four hundred ninety-one".