133455769 has 2 divisors, whose sum is σ = 133455770. Its totient is φ = 133455768.

The previous prime is 133455743. The next prime is 133455793. The reversal of 133455769 is 967554331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130233744 + 3222025 = 11412^2 + 1795^2 .

It is an emirp because it is prime and its reverse (967554331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133455769 - 2¹¹ = 133453721 is a prime.

It is a super-2 number, since 2×133455769² = 35620884558762722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133455719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66727884 + 66727885.

It is an arithmetic number, because the mean of its divisors is an integer number (66727885).

Almost surely, 2^133455769 is an apocalyptic number.

It is an amenable number.

133455769 is a deficient number, since it is larger than the sum of its proper divisors (1).

133455769 is an equidigital number, since it uses as much as digits as its factorization.

133455769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 43.

The square root of 133455769 is about 11552.3057871578. The cubic root of 133455769 is about 511.0292797665.

The spelling of 133455769 in words is "one hundred thirty-three million, four hundred fifty-five thousand, seven hundred sixty-nine".