133775001 has 12 divisors (see below), whose sum is σ = 195559728. Its totient is φ = 88108344.

The previous prime is 133774997. The next prime is 133775011. The reversal of 133775001 is 100577331.

It is not a de Polignac number, because 133775001 - 2² = 133774997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133775011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88795 + ... + 90288.

It is an arithmetic number, because the mean of its divisors is an integer number (16296644).

Almost surely, 2^133775001 is an apocalyptic number.

It is an amenable number.

133775001 is a deficient number, since it is larger than the sum of its proper divisors (61784727).

133775001 is a wasteful number, since it uses less digits than its factorization.

133775001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179172 (or 179169 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 27.

The square root of 133775001 is about 11566.1143432010. The cubic root of 133775001 is about 511.4364233867.

The spelling of 133775001 in words is "one hundred thirty-three million, seven hundred seventy-five thousand, one".