133145201 has 6 divisors (see below), whose sum is σ = 154883250. Its totient is φ = 114124416.

The previous prime is 133145189. The next prime is 133145213. The reversal of 133145201 is 102541331.

It is an interprime number because it is at equal distance from previous prime (133145189) and next prime (133145213).

It can be written as a sum of positive squares in only one way, i.e., 116661601 + 16483600 = 10801^2 + 4060^2 .

It is not a de Polignac number, because 133145201 - 2¹⁸ = 132883057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133145251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1358576 + ... + 1358673.

It is an arithmetic number, because the mean of its divisors is an integer number (25813875).

Almost surely, 2^133145201 is an apocalyptic number.

It is an amenable number.

133145201 is a deficient number, since it is larger than the sum of its proper divisors (21738049).

133145201 is an equidigital number, since it uses as much as digits as its factorization.

133145201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717263 (or 2717256 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 133145201 is about 11538.8561391500. The cubic root of 133145201 is about 510.6325625270.

Adding to 133145201 its reverse (102541331), we get a palindrome (235686532).

The spelling of 133145201 in words is "one hundred thirty-three million, one hundred forty-five thousand, two hundred one".