133087771 has 2 divisors, whose sum is σ = 133087772. Its totient is φ = 133087770.

The previous prime is 133087739. The next prime is 133087789. The reversal of 133087771 is 177780331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133087771 - 2⁵ = 133087739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133087771.

It is not a weakly prime, because it can be changed into another prime (133082771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66543885 + 66543886.

It is an arithmetic number, because the mean of its divisors is an integer number (66543886).

Almost surely, 2^133087771 is an apocalyptic number.

133087771 is a deficient number, since it is larger than the sum of its proper divisors (1).

133087771 is an equidigital number, since it uses as much as digits as its factorization.

133087771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 133087771 is about 11536.3673225154. The cubic root of 133087771 is about 510.5591343067.

The spelling of 133087771 in words is "one hundred thirty-three million, eighty-seven thousand, seven hundred seventy-one".