133251456 has 64 divisors (see below), whose sum is σ = 381190320. Its totient is φ = 40998912.

The previous prime is 133251449. The next prime is 133251523. The reversal of 133251456 is 654152331.

133251456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×133251456² = 35511901052239872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8355 + ... + 18338.

Almost surely, 2^133251456 is an apocalyptic number.

133251456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133251456 is an abundant number, since it is smaller than the sum of its proper divisors (247938864).

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

133251456 is a wasteful number, since it uses less digits than its factorization.

133251456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26723 (or 26711 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 133251456 is about 11543.4594468036. The cubic root of 133251456 is about 510.7683612284.

The spelling of 133251456 in words is "one hundred thirty-three million, two hundred fifty-one thousand, four hundred fifty-six".