133563101 has 16 divisors (see below), whose sum is σ = 163451520. Its totient is φ = 106529280.

The previous prime is 133563091. The next prime is 133563109. The reversal of 133563101 is 101365331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 133563101 - 2¹⁸ = 133300957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133563109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4286 + ... + 16896.

It is an arithmetic number, because the mean of its divisors is an integer number (10215720).

Almost surely, 2^133563101 is an apocalyptic number.

It is an amenable number.

133563101 is a deficient number, since it is larger than the sum of its proper divisors (29888419).

133563101 is a wasteful number, since it uses less digits than its factorization.

133563101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12724.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 133563101 is about 11556.9503330247. The cubic root of 133563101 is about 511.1662417410.

The spelling of 133563101 in words is "one hundred thirty-three million, five hundred sixty-three thousand, one hundred one".