133956506 has 8 divisors (see below), whose sum is σ = 200992224. Its totient is φ = 66959100.

The previous prime is 133956503. The next prime is 133956521. The reversal of 133956506 is 605659331.

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

It is a self number, because there is not a number n which added to its sum of digits gives 133956506.

It is not an unprimeable number, because it can be changed into a prime (133956503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1931 + ... + 16481.

It is an arithmetic number, because the mean of its divisors is an integer number (25124028).

Almost surely, 2^133956506 is an apocalyptic number.

133956506 is a deficient number, since it is larger than the sum of its proper divisors (67035718).

133956506 is a wasteful number, since it uses less digits than its factorization.

133956506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19156.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 133956506 is about 11573.9580956560. The cubic root of 133956506 is about 511.6676233270.

The spelling of 133956506 in words is "one hundred thirty-three million, nine hundred fifty-six thousand, five hundred six".