133521106 has 8 divisors (see below), whose sum is σ = 204939504. Its totient is φ = 65207940.

The previous prime is 133521103. The next prime is 133521119. The reversal of 133521106 is 601125331.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (133521103) 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, 776200 + ... + 776371.

It is an arithmetic number, because the mean of its divisors is an integer number (25617438).

Almost surely, 2^133521106 is an apocalyptic number.

133521106 is a deficient number, since it is larger than the sum of its proper divisors (71418398).

133521106 is a wasteful number, since it uses less digits than its factorization.

133521106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552616.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 133521106 is about 11555.1333181405. The cubic root of 133521106 is about 511.1126623806.

Adding to 133521106 its reverse (601125331), we get a palindrome (734646437).

The spelling of 133521106 in words is "one hundred thirty-three million, five hundred twenty-one thousand, one hundred six".