133000751 has 4 divisors (see below), whose sum is σ = 143231592. Its totient is φ = 122769912.

The previous prime is 133000727. The next prime is 133000753. The reversal of 133000751 is 157000331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133000751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133000753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115401 + ... + 5115426.

It is an arithmetic number, because the mean of its divisors is an integer number (35807898).

Almost surely, 2^133000751 is an apocalyptic number.

133000751 is a deficient number, since it is larger than the sum of its proper divisors (10230841).

133000751 is a wasteful number, since it uses less digits than its factorization.

133000751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10230840.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 133000751 is about 11532.5951546042. The cubic root of 133000751 is about 510.4478329643.

The spelling of 133000751 in words is "one hundred thirty-three million, seven hundred fifty-one", and thus it is an aban number.