133155459 has 24 divisors (see below), whose sum is σ = 196245504. Its totient is φ = 86982000.

The previous prime is 133155437. The next prime is 133155469. The reversal of 133155459 is 954551331.

It is a happy number.

It is not a de Polignac number, because 133155459 - 2⁵ = 133155427 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (133155419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121504 + ... + 122594.

It is an arithmetic number, because the mean of its divisors is an integer number (8176896).

Almost surely, 2^133155459 is an apocalyptic number.

133155459 is a deficient number, since it is larger than the sum of its proper divisors (63090045).

133155459 is a wasteful number, since it uses less digits than its factorization.

133155459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359 (or 1356 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 133155459 is about 11539.3006287210. The cubic root of 133155459 is about 510.6456758656.

The spelling of 133155459 in words is "one hundred thirty-three million, one hundred fifty-five thousand, four hundred fifty-nine".