133550233 has 2 divisors, whose sum is σ = 133550234. Its totient is φ = 133550232.

The previous prime is 133550159. The next prime is 133550239. The reversal of 133550233 is 332055331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124835929 + 8714304 = 11173^2 + 2952^2 .

It is a cyclic number.

It is not a de Polignac number, because 133550233 - 2⁹ = 133549721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133550198 and 133550207.

It is not a weakly prime, because it can be changed into another prime (133550239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66775116 + 66775117.

It is an arithmetic number, because the mean of its divisors is an integer number (66775117).

Almost surely, 2^133550233 is an apocalyptic number.

It is an amenable number.

133550233 is a deficient number, since it is larger than the sum of its proper divisors (1).

133550233 is an equidigital number, since it uses as much as digits as its factorization.

133550233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 25.

The square root of 133550233 is about 11556.3935983507. The cubic root of 133550233 is about 511.1498252846.

The spelling of 133550233 in words is "one hundred thirty-three million, five hundred fifty thousand, two hundred thirty-three".