133235553 has 16 divisors (see below), whose sum is σ = 197922816. Its totient is φ = 79029840.

The previous prime is 133235549. The next prime is 133235563. The reversal of 133235553 is 355532331.

It is not a de Polignac number, because 133235553 - 2² = 133235549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133235553.

It is not an unprimeable number, because it can be changed into a prime (133235513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41401 + ... + 44502.

It is an arithmetic number, because the mean of its divisors is an integer number (12370176).

Almost surely, 2^133235553 is an apocalyptic number.

It is an amenable number.

133235553 is a deficient number, since it is larger than the sum of its proper divisors (64687263).

133235553 is a wasteful number, since it uses less digits than its factorization.

133235553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85964.

The product of its digits is 20250, while the sum is 30.

The square root of 133235553 is about 11542.7705946190. The cubic root of 133235553 is about 510.7480410692.

Adding to 133235553 its reverse (355532331), we get a palindrome (488767884).

The spelling of 133235553 in words is "one hundred thirty-three million, two hundred thirty-five thousand, five hundred fifty-three".