133875001 has 4 divisors (see below), whose sum is σ = 144173092. Its totient is φ = 123576912.

The previous prime is 133874987. The next prime is 133875011. The reversal of 133875001 is 100578331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7290000 + 126585001 = 2700^2 + 11251^2 .

It is a cyclic number.

It is not a de Polignac number, because 133875001 - 2¹¹ = 133872953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133875011) 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 3 ways as a sum of consecutive naturals, for example, 5149026 + ... + 5149051.

It is an arithmetic number, because the mean of its divisors is an integer number (36043273).

Almost surely, 2^133875001 is an apocalyptic number.

It is an amenable number.

133875001 is a deficient number, since it is larger than the sum of its proper divisors (10298091).

133875001 is a wasteful number, since it uses less digits than its factorization.

133875001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10298090.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 133875001 is about 11570.4365086197. The cubic root of 133875001 is about 511.5638286157.

The spelling of 133875001 in words is "one hundred thirty-three million, eight hundred seventy-five thousand, one".