133268251 has 2 divisors, whose sum is σ = 133268252. Its totient is φ = 133268250.

The previous prime is 133268209. The next prime is 133268269. The reversal of 133268251 is 152862331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133268251 - 2²⁵ = 99713819 is a prime.

It is not a weakly prime, because it can be changed into another prime (133268281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66634125 + 66634126.

It is an arithmetic number, because the mean of its divisors is an integer number (66634126).

Almost surely, 2^133268251 is an apocalyptic number.

133268251 is a deficient number, since it is larger than the sum of its proper divisors (1).

133268251 is an equidigital number, since it uses as much as digits as its factorization.

133268251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 133268251 is about 11544.1868921115. The cubic root of 133268251 is about 510.7898193911.

The spelling of 133268251 in words is "one hundred thirty-three million, two hundred sixty-eight thousand, two hundred fifty-one".