133505069 has 2 divisors, whose sum is σ = 133505070. Its totient is φ = 133505068.

The previous prime is 133505033. The next prime is 133505081. The reversal of 133505069 is 960505331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111555844 + 21949225 = 10562^2 + 4685^2 .

It is an emirp because it is prime and its reverse (960505331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133505069 is a prime.

It is a super-2 number, since 2×133505069² = 35647206897389522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133505089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66752534 + 66752535.

It is an arithmetic number, because the mean of its divisors is an integer number (66752535).

Almost surely, 2^133505069 is an apocalyptic number.

It is an amenable number.

133505069 is a deficient number, since it is larger than the sum of its proper divisors (1).

133505069 is an equidigital number, since it uses as much as digits as its factorization.

133505069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 133505069 is about 11554.4393632924. The cubic root of 133505069 is about 511.0921985948.

The spelling of 133505069 in words is "one hundred thirty-three million, five hundred five thousand, sixty-nine".