133055239 has 2 divisors, whose sum is σ = 133055240. Its totient is φ = 133055238.

The previous prime is 133055189. The next prime is 133055257. The reversal of 133055239 is 932550331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133055239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133055239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133055269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66527619 + 66527620.

It is an arithmetic number, because the mean of its divisors is an integer number (66527620).

Almost surely, 2^133055239 is an apocalyptic number.

133055239 is a deficient number, since it is larger than the sum of its proper divisors (1).

133055239 is an equidigital number, since it uses as much as digits as its factorization.

133055239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 133055239 is about 11534.9572604323. The cubic root of 133055239 is about 510.5175305261.

The spelling of 133055239 in words is "one hundred thirty-three million, fifty-five thousand, two hundred thirty-nine".