133532447 has 2 divisors, whose sum is σ = 133532448. Its totient is φ = 133532446.

The previous prime is 133532429. The next prime is 133532491. The reversal of 133532447 is 744235331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133532447 - 2¹⁰ = 133531423 is a prime.

It is a Chen prime.

It is equal to p_7567061 and since 133532447 and 7567061 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133532947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66766223 + 66766224.

It is an arithmetic number, because the mean of its divisors is an integer number (66766224).

Almost surely, 2^133532447 is an apocalyptic number.

133532447 is a deficient number, since it is larger than the sum of its proper divisors (1).

133532447 is an equidigital number, since it uses as much as digits as its factorization.

133532447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 32.

The square root of 133532447 is about 11555.6240419979. The cubic root of 133532447 is about 511.1271329134.

Adding to 133532447 its reverse (744235331), we get a palindrome (877767778).

The spelling of 133532447 in words is "one hundred thirty-three million, five hundred thirty-two thousand, four hundred forty-seven".