133277861 has 2 divisors, whose sum is σ = 133277862. Its totient is φ = 133277860.

The previous prime is 133277849. The next prime is 133277867. The reversal of 133277861 is 168772331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127825636 + 5452225 = 11306^2 + 2335^2 .

It is a cyclic number.

It is not a de Polignac number, because 133277861 - 2⁶ = 133277797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133277867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66638930 + 66638931.

It is an arithmetic number, because the mean of its divisors is an integer number (66638931).

Almost surely, 2^133277861 is an apocalyptic number.

It is an amenable number.

133277861 is a deficient number, since it is larger than the sum of its proper divisors (1).

133277861 is an equidigital number, since it uses as much as digits as its factorization.

133277861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 133277861 is about 11544.6031114110. The cubic root of 133277861 is about 510.8020968143.

The spelling of 133277861 in words is "one hundred thirty-three million, two hundred seventy-seven thousand, eight hundred sixty-one".