133277971 has 2 divisors, whose sum is σ = 133277972. Its totient is φ = 133277970.

The previous prime is 133277929. The next prime is 133277981. The reversal of 133277971 is 179772331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133277971 - 2⁷ = 133277843 is a prime.

It is a Chen prime.

It is equal to p_7553389 and since 133277971 and 7553389 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (133277981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66638985 + 66638986.

It is an arithmetic number, because the mean of its divisors is an integer number (66638986).

Almost surely, 2^133277971 is an apocalyptic number.

133277971 is a deficient number, since it is larger than the sum of its proper divisors (1).

133277971 is an equidigital number, since it uses as much as digits as its factorization.

133277971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566, while the sum is 40.

The square root of 133277971 is about 11544.6078755409. The cubic root of 133277971 is about 510.8022373434.

The spelling of 133277971 in words is "one hundred thirty-three million, two hundred seventy-seven thousand, nine hundred seventy-one".