133453520 has 40 divisors (see below), whose sum is σ = 310935456. Its totient is φ = 53268608.

The previous prime is 133453501. The next prime is 133453531. The reversal of 133453520 is 25354331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 133453520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43559 + ... + 46521.

Almost surely, 2^133453520 is an apocalyptic number.

133453520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133453520 is an abundant number, since it is smaller than the sum of its proper divisors (177481936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133453520 is a wasteful number, since it uses less digits than its factorization.

133453520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539 (or 3533 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 133453520 is about 11552.2084468728. The cubic root of 133453520 is about 511.0264091243.

The spelling of 133453520 in words is "one hundred thirty-three million, four hundred fifty-three thousand, five hundred twenty".