133001161 has 8 divisors (see below), whose sum is σ = 135000320. Its totient is φ = 131010048.

The previous prime is 133001123. The next prime is 133001207. The reversal of 133001161 is 161100331.

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

It is a cyclic number.

It is not a de Polignac number, because 133001161 - 2²¹ = 130904009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133001101) 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 7 ways as a sum of consecutive naturals, for example, 36745 + ... + 40201.

It is an arithmetic number, because the mean of its divisors is an integer number (16875040).

Almost surely, 2^133001161 is an apocalyptic number.

It is an amenable number.

133001161 is a deficient number, since it is larger than the sum of its proper divisors (1999159).

133001161 is an equidigital number, since it uses as much as digits as its factorization.

133001161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 133001161 is about 11532.6129302947. The cubic root of 133001161 is about 510.4483574811.

Adding to 133001161 its reverse (161100331), we get a palindrome (294101492).

The spelling of 133001161 in words is "one hundred thirty-three million, one thousand, one hundred sixty-one".