133016447 has 4 divisors (see below), whose sum is σ = 133046760. Its totient is φ = 132986136.

The previous prime is 133016419. The next prime is 133016459. The reversal of 133016447 is 744610331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744610331 = 47 ⋅15842773.

It is a cyclic number.

It is not a de Polignac number, because 133016447 - 2¹⁰ = 133015423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133016497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7172 + ... + 17817.

It is an arithmetic number, because the mean of its divisors is an integer number (33261690).

Almost surely, 2^133016447 is an apocalyptic number.

133016447 is a deficient number, since it is larger than the sum of its proper divisors (30313).

133016447 is an equidigital number, since it uses as much as digits as its factorization.

133016447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30312.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 133016447 is about 11533.2756405108. The cubic root of 133016447 is about 510.4679122344.

Adding to 133016447 its reverse (744610331), we get a palindrome (877626778).

The spelling of 133016447 in words is "one hundred thirty-three million, sixteen thousand, four hundred forty-seven".