133436081 has 2 divisors, whose sum is σ = 133436082. Its totient is φ = 133436080.

The previous prime is 133435999. The next prime is 133436101. The reversal of 133436081 is 180634331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85008400 + 48427681 = 9220^2 + 6959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133436081 is a prime.

It is a super-2 number, since 2×133436081² = 35610375425277122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133430081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66718040 + 66718041.

It is an arithmetic number, because the mean of its divisors is an integer number (66718041).

Almost surely, 2^133436081 is an apocalyptic number.

It is an amenable number.

133436081 is a deficient number, since it is larger than the sum of its proper divisors (1).

133436081 is an equidigital number, since it uses as much as digits as its factorization.

133436081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 133436081 is about 11551.4536314699. The cubic root of 133436081 is about 511.0041487454.

The spelling of 133436081 in words is "one hundred thirty-three million, four hundred thirty-six thousand, eighty-one".