133508477 has 2 divisors, whose sum is σ = 133508478. Its totient is φ = 133508476.

The previous prime is 133508407. The next prime is 133508509. The reversal of 133508477 is 774805331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122124601 + 11383876 = 11051^2 + 3374^2 .

It is a cyclic number.

It is not a de Polignac number, because 133508477 - 2¹⁰ = 133507453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133508477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133508407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66754238 + 66754239.

It is an arithmetic number, because the mean of its divisors is an integer number (66754239).

Almost surely, 2^133508477 is an apocalyptic number.

It is an amenable number.

133508477 is a deficient number, since it is larger than the sum of its proper divisors (1).

133508477 is an equidigital number, since it uses as much as digits as its factorization.

133508477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 133508477 is about 11554.5868381349. The cubic root of 133508477 is about 511.0965474619.

The spelling of 133508477 in words is "one hundred thirty-three million, five hundred eight thousand, four hundred seventy-seven".