133572191 has 2 divisors, whose sum is σ = 133572192. Its totient is φ = 133572190.

The previous prime is 133572169. The next prime is 133572199. The reversal of 133572191 is 191275331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133572191 - 2¹⁰ = 133571167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133572199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66786095 + 66786096.

It is an arithmetic number, because the mean of its divisors is an integer number (66786096).

Almost surely, 2^133572191 is an apocalyptic number.

133572191 is a deficient number, since it is larger than the sum of its proper divisors (1).

133572191 is an equidigital number, since it uses as much as digits as its factorization.

133572191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 133572191 is about 11557.3435961730. The cubic root of 133572191 is about 511.1778377474.

The spelling of 133572191 in words is "one hundred thirty-three million, five hundred seventy-two thousand, one hundred ninety-one".