133506001 has 2 divisors, whose sum is σ = 133506002. Its totient is φ = 133506000.

The previous prime is 133505987. The next prime is 133506019. The reversal of 133506001 is 100605331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108993600 + 24512401 = 10440^2 + 4951^2 .

It is a cyclic number.

It is not a de Polignac number, because 133506001 - 2¹³ = 133497809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133506001.

It is not a weakly prime, because it can be changed into another prime (133506041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66753000 + 66753001.

It is an arithmetic number, because the mean of its divisors is an integer number (66753001).

Almost surely, 2^133506001 is an apocalyptic number.

It is an amenable number.

133506001 is a deficient number, since it is larger than the sum of its proper divisors (1).

133506001 is an equidigital number, since it uses as much as digits as its factorization.

133506001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 133506001 is about 11554.4796940407. The cubic root of 133506001 is about 511.0933879050.

The spelling of 133506001 in words is "one hundred thirty-three million, five hundred six thousand, one".