133403751 has 12 divisors (see below), whose sum is σ = 207517128. Its totient is φ = 82094544.

The previous prime is 133403701. The next prime is 133403771. The reversal of 133403751 is 157304331.

It is not a de Polignac number, because 133403751 - 2⁷ = 133403623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133403701) 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 11 ways as a sum of consecutive naturals, for example, 569985 + ... + 570218.

It is an arithmetic number, because the mean of its divisors is an integer number (17293094).

Almost surely, 2^133403751 is an apocalyptic number.

133403751 is a deficient number, since it is larger than the sum of its proper divisors (74113377).

133403751 is a wasteful number, since it uses less digits than its factorization.

133403751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140222 (or 1140219 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 133403751 is about 11550.0541557172. The cubic root of 133403751 is about 510.9628753046.

The spelling of 133403751 in words is "one hundred thirty-three million, four hundred three thousand, seven hundred fifty-one".