133345517 has 4 divisors (see below), whose sum is σ = 133497756. Its totient is φ = 133193280.

The previous prime is 133345483. The next prime is 133345519. The reversal of 133345517 is 715543331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 92717641 + 40627876 = 9629^2 + 6374^2 .

It is a cyclic number.

It is not a de Polignac number, because 133345517 - 2⁶ = 133345453 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 (133345519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74798 + ... + 76559.

It is an arithmetic number, because the mean of its divisors is an integer number (33374439).

Almost surely, 2^133345517 is an apocalyptic number.

It is an amenable number.

133345517 is a deficient number, since it is larger than the sum of its proper divisors (152239).

133345517 is an equidigital number, since it uses as much as digits as its factorization.

133345517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152238.

The product of its digits is 18900, while the sum is 32.

The square root of 133345517 is about 11547.5329399833. The cubic root of 133345517 is about 510.8885152196. Note that the first 3 decimals are identical.

Adding to 133345517 its reverse (715543331), we get a palindrome (848888848).

The spelling of 133345517 in words is "one hundred thirty-three million, three hundred forty-five thousand, five hundred seventeen".