133252837 has 2 divisors, whose sum is σ = 133252838. Its totient is φ = 133252836.

The previous prime is 133252811. The next prime is 133252841. The reversal of 133252837 is 738252331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66683556 + 66569281 = 8166^2 + 8159^2 .

It is an emirp because it is prime and its reverse (738252331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133252837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133252897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66626418 + 66626419.

It is an arithmetic number, because the mean of its divisors is an integer number (66626419).

Almost surely, 2^133252837 is an apocalyptic number.

It is an amenable number.

133252837 is a deficient number, since it is larger than the sum of its proper divisors (1).

133252837 is an equidigital number, since it uses as much as digits as its factorization.

133252837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 133252837 is about 11543.5192640719. The cubic root of 133252837 is about 510.7701257336.

The spelling of 133252837 in words is "one hundred thirty-three million, two hundred fifty-two thousand, eight hundred thirty-seven".