133017247 has 8 divisors (see below), whose sum is σ = 145664640. Its totient is φ = 120462360.

The previous prime is 133017223. The next prime is 133017253. The reversal of 133017247 is 742710331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133017247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133012247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20097 + ... + 25882.

It is an arithmetic number, because the mean of its divisors is an integer number (18208080).

Almost surely, 2^133017247 is an apocalyptic number.

133017247 is a deficient number, since it is larger than the sum of its proper divisors (12647393).

133017247 is a wasteful number, since it uses less digits than its factorization.

133017247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46253.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 133017247 is about 11533.3103227131. The cubic root of 133017247 is about 510.4689356004.

Adding to 133017247 its reverse (742710331), we get a palindrome (875727578).

The spelling of 133017247 in words is "one hundred thirty-three million, seventeen thousand, two hundred forty-seven".