133303057 has 2 divisors, whose sum is σ = 133303058. Its totient is φ = 133303056.

The previous prime is 133303039. The next prime is 133303067. The reversal of 133303057 is 750303331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69239041 + 64064016 = 8321^2 + 8004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133303057 is a prime.

It is not a weakly prime, because it can be changed into another prime (133303067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66651528 + 66651529.

It is an arithmetic number, because the mean of its divisors is an integer number (66651529).

Almost surely, 2^133303057 is an apocalyptic number.

It is an amenable number.

133303057 is a deficient number, since it is larger than the sum of its proper divisors (1).

133303057 is an equidigital number, since it uses as much as digits as its factorization.

133303057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 25.

The square root of 133303057 is about 11545.6943056708. The cubic root of 133303057 is about 510.8342836021.

Adding to 133303057 its reverse (750303331), we get a palindrome (883606388).

The spelling of 133303057 in words is "one hundred thirty-three million, three hundred three thousand, fifty-seven".