133505851 has 2 divisors, whose sum is σ = 133505852. Its totient is φ = 133505850.

The previous prime is 133505807. The next prime is 133505861. The reversal of 133505851 is 158505331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133505851 - 2¹⁵ = 133473083 is a prime.

It is not a weakly prime, because it can be changed into another prime (133505861) 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 as a sum of consecutive naturals, namely, 66752925 + 66752926.

It is an arithmetic number, because the mean of its divisors is an integer number (66752926).

Almost surely, 2^133505851 is an apocalyptic number.

133505851 is a deficient number, since it is larger than the sum of its proper divisors (1).

133505851 is an equidigital number, since it uses as much as digits as its factorization.

133505851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 133505851 is about 11554.4732030500. The cubic root of 133505851 is about 511.0931964928.

The spelling of 133505851 in words is "one hundred thirty-three million, five hundred five thousand, eight hundred fifty-one".