133497047 has 4 divisors (see below), whose sum is σ = 134471616. Its totient is φ = 132522480.

The previous prime is 133497017. The next prime is 133497079. The reversal of 133497047 is 740794331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133497047 - 2⁸ = 133496791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133497047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133497017) 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, 487079 + ... + 487352.

It is an arithmetic number, because the mean of its divisors is an integer number (33617904).

Almost surely, 2^133497047 is an apocalyptic number.

133497047 is a deficient number, since it is larger than the sum of its proper divisors (974569).

133497047 is an equidigital number, since it uses as much as digits as its factorization.

133497047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974568.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 133497047 is about 11554.0922187769. The cubic root of 133497047 is about 511.0819616209.

The spelling of 133497047 in words is "one hundred thirty-three million, four hundred ninety-seven thousand, forty-seven".