133583173 has 2 divisors, whose sum is σ = 133583174. Its totient is φ = 133583172.

The previous prime is 133583159. The next prime is 133583183. The reversal of 133583173 is 371385331.

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., 128663649 + 4919524 = 11343^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 133583173 - 2⁵ = 133583141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133583113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66791586 + 66791587.

It is an arithmetic number, because the mean of its divisors is an integer number (66791587).

Almost surely, 2^133583173 is an apocalyptic number.

It is an amenable number.

133583173 is a deficient number, since it is larger than the sum of its proper divisors (1).

133583173 is an equidigital number, since it uses as much as digits as its factorization.

133583173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 133583173 is about 11557.8186955844. The cubic root of 133583173 is about 511.1918466543.

The spelling of 133583173 in words is "one hundred thirty-three million, five hundred eighty-three thousand, one hundred seventy-three".