133601001 has 16 divisors (see below), whose sum is σ = 183277248. Its totient is φ = 86515200.

The previous prime is 133600993. The next prime is 133601003. The reversal of 133601001 is 100106331.

It is not a de Polignac number, because 133601001 - 2³ = 133600993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133601003) 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, 27390 + ... + 31896.

It is an arithmetic number, because the mean of its divisors is an integer number (11454828).

Almost surely, 2^133601001 is an apocalyptic number.

It is an amenable number.

133601001 is a deficient number, since it is larger than the sum of its proper divisors (49676247).

133601001 is a wasteful number, since it uses less digits than its factorization.

133601001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 133601001 is about 11558.5899226506. The cubic root of 133601001 is about 511.2145868509.

Adding to 133601001 its reverse (100106331), we get a palindrome (233707332).

The spelling of 133601001 in words is "one hundred thirty-three million, six hundred one thousand, one".