133515155 has 16 divisors (see below), whose sum is σ = 162077664. Its totient is φ = 105580800.

The previous prime is 133515143. The next prime is 133515157. The reversal of 133515155 is 551515331.

It is not a de Polignac number, because 133515155 - 2¹⁸ = 133253011 is a prime.

It is a super-2 number, since 2×133515155² = 35652593229348050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133515157) 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, 221855 + ... + 222455.

It is an arithmetic number, because the mean of its divisors is an integer number (10129854).

Almost surely, 2^133515155 is an apocalyptic number.

133515155 is a deficient number, since it is larger than the sum of its proper divisors (28562509).

133515155 is a wasteful number, since it uses less digits than its factorization.

133515155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046.

The product of its digits is 5625, while the sum is 29.

The square root of 133515155 is about 11554.8758106697. The cubic root of 133515155 is about 511.1050688829.

The spelling of 133515155 in words is "one hundred thirty-three million, five hundred fifteen thousand, one hundred fifty-five".