133563091 has 2 divisors, whose sum is σ = 133563092. Its totient is φ = 133563090.

The previous prime is 133563043. The next prime is 133563109. The reversal of 133563091 is 190365331.

Together with next prime (133563109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133563091 - 2¹⁵ = 133530323 is a prime.

It is not a weakly prime, because it can be changed into another prime (133563791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66781545 + 66781546.

It is an arithmetic number, because the mean of its divisors is an integer number (66781546).

Almost surely, 2^133563091 is an apocalyptic number.

133563091 is a deficient number, since it is larger than the sum of its proper divisors (1).

133563091 is an equidigital number, since it uses as much as digits as its factorization.

133563091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 133563091 is about 11556.9499003846. The cubic root of 133563091 is about 511.1662289838.

The spelling of 133563091 in words is "one hundred thirty-three million, five hundred sixty-three thousand, ninety-one".