133561107 has 6 divisors (see below), whose sum is σ = 192921612. Its totient is φ = 89040732.

The previous prime is 133561093. The next prime is 133561117. The reversal of 133561107 is 701165331.

133561107 is a `hidden beast` number, since 13 + 35 + 611 + 0 + 7 = 666.

It is not a de Polignac number, because 133561107 - 2²⁰ = 132512531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133561117) 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 5 ways as a sum of consecutive naturals, for example, 7420053 + ... + 7420070.

It is an arithmetic number, because the mean of its divisors is an integer number (32153602).

Almost surely, 2^133561107 is an apocalyptic number.

133561107 is a deficient number, since it is larger than the sum of its proper divisors (59360505).

133561107 is a wasteful number, since it uses less digits than its factorization.

133561107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14840129 (or 14840126 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 133561107 is about 11556.8640642693. The cubic root of 133561107 is about 511.1636979482.

The spelling of 133561107 in words is "one hundred thirty-three million, five hundred sixty-one thousand, one hundred seven".