133551430 has 16 divisors (see below), whose sum is σ = 240526224. Its totient is φ = 53390880.

The previous prime is 133551413. The next prime is 133551433. The reversal of 133551430 is 34155331.

It is a junction number, because it is equal to n+sod(n) for n = 133551395 and 133551404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133551433) 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 7 ways as a sum of consecutive naturals, for example, 28429 + ... + 32791.

It is an arithmetic number, because the mean of its divisors is an integer number (15032889).

Almost surely, 2^133551430 is an apocalyptic number.

133551430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133551430 is a deficient number, since it is larger than the sum of its proper divisors (106974794).

133551430 is a wasteful number, since it uses less digits than its factorization.

133551430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7431.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 133551430 is about 11556.4453877479. The cubic root of 133551430 is about 511.1513524117.

The spelling of 133551430 in words is "one hundred thirty-three million, five hundred fifty-one thousand, four hundred thirty".