133345515 has 16 divisors (see below), whose sum is σ = 224582400. Its totient is φ = 67374432.

The previous prime is 133345483. The next prime is 133345519. The reversal of 133345515 is 515543331.

It is not a de Polignac number, because 133345515 - 2⁵ = 133345483 is a prime.

It is a super-3 number, since 3×133345515³ (a number of 25 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 233655 + ... + 234224.

It is an arithmetic number, because the mean of its divisors is an integer number (14036400).

Almost surely, 2^133345515 is an apocalyptic number.

133345515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133345515 is a deficient number, since it is larger than the sum of its proper divisors (91236885).

133345515 is a wasteful number, since it uses less digits than its factorization.

133345515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467906.

The product of its digits is 13500, while the sum is 30.

The square root of 133345515 is about 11547.5328533847. The cubic root of 133345515 is about 510.8885126654. Note that the first 3 decimals are identical.

Adding to 133345515 its reverse (515543331), we get a palindrome (648888846).

The spelling of 133345515 in words is "one hundred thirty-three million, three hundred forty-five thousand, five hundred fifteen".