133158001 has 2 divisors, whose sum is σ = 133158002. Its totient is φ = 133158000.

The previous prime is 133157987. The next prime is 133158019. The reversal of 133158001 is 100851331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67223601 + 65934400 = 8199^2 + 8120^2 .

It is a cyclic number.

It is not a de Polignac number, because 133158001 - 2⁹ = 133157489 is a prime.

It is not a weakly prime, because it can be changed into another prime (133158031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66579000 + 66579001.

It is an arithmetic number, because the mean of its divisors is an integer number (66579001).

Almost surely, 2^133158001 is an apocalyptic number.

It is an amenable number.

133158001 is a deficient number, since it is larger than the sum of its proper divisors (1).

133158001 is an equidigital number, since it uses as much as digits as its factorization.

133158001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 133158001 is about 11539.4107735187. The cubic root of 133158001 is about 510.6489253332.

It can be divided in two parts, 13315 and 8001, that added together give a square (21316 = 146²).

The spelling of 133158001 in words is "one hundred thirty-three million, one hundred fifty-eight thousand, one".