133550709 has 8 divisors (see below), whose sum is σ = 178187520. Its totient is φ = 88973856.

The previous prime is 133550693. The next prime is 133550717. The reversal of 133550709 is 907055331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133550709 - 2⁴ = 133550693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133550709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133550509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9504 + ... + 18905.

It is an arithmetic number, because the mean of its divisors is an integer number (22273440).

Almost surely, 2^133550709 is an apocalyptic number.

It is an amenable number.

133550709 is a deficient number, since it is larger than the sum of its proper divisors (44636811).

133550709 is a wasteful number, since it uses less digits than its factorization.

133550709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29979.

The product of its (nonzero) digits is 14175, while the sum is 33.

The square root of 133550709 is about 11556.4141929926. The cubic root of 133550709 is about 511.1504325643.

The spelling of 133550709 in words is "one hundred thirty-three million, five hundred fifty thousand, seven hundred nine".