133448553 has 64 divisors (see below), whose sum is σ = 239308800. Its totient is φ = 72748368.

The previous prime is 133448527. The next prime is 133448561. The reversal of 133448553 is 355844331.

It is a de Polignac number, because none of the positive numbers 2^k-133448553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133449553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 351918 + ... + 352296.

It is an arithmetic number, because the mean of its divisors is an integer number (3739200).

Almost surely, 2^133448553 is an apocalyptic number.

It is an amenable number.

133448553 is a deficient number, since it is larger than the sum of its proper divisors (105860247).

133448553 is an frugal number, since it uses more digits than its factorization.

133448553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 412 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 133448553 is about 11551.9934643333. The cubic root of 133448553 is about 511.0200690900.

The spelling of 133448553 in words is "one hundred thirty-three million, four hundred forty-eight thousand, five hundred fifty-three".