133471757 has 2 divisors, whose sum is σ = 133471758. Its totient is φ = 133471756.

The previous prime is 133471739. The next prime is 133471759. The reversal of 133471757 is 757174331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112805641 + 20666116 = 10621^2 + 4546^2 .

It is an emirp because it is prime and its reverse (757174331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133471757 - 2⁸ = 133471501 is a prime.

Together with 133471759, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133471757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133471759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66735878 + 66735879.

It is an arithmetic number, because the mean of its divisors is an integer number (66735879).

Almost surely, 2^133471757 is an apocalyptic number.

It is an amenable number.

133471757 is a deficient number, since it is larger than the sum of its proper divisors (1).

133471757 is an equidigital number, since it uses as much as digits as its factorization.

133471757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 38.

The square root of 133471757 is about 11552.9977495021. The cubic root of 133471757 is about 511.0496860528.

The spelling of 133471757 in words is "one hundred thirty-three million, four hundred seventy-one thousand, seven hundred fifty-seven".