133515145 has 8 divisors (see below), whose sum is σ = 162475200. Its totient is φ = 105307440.

The previous prime is 133515143. The next prime is 133515157. The reversal of 133515145 is 541515331.

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

It is not a de Polignac number, because 133515145 - 2¹ = 133515143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133515143) 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, 187695 + ... + 188404.

It is an arithmetic number, because the mean of its divisors is an integer number (20309400).

Almost surely, 2^133515145 is an apocalyptic number.

It is an amenable number.

133515145 is a deficient number, since it is larger than the sum of its proper divisors (28960055).

133515145 is an equidigital number, since it uses as much as digits as its factorization.

133515145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376175.

The product of its digits is 4500, while the sum is 28.

The square root of 133515145 is about 11554.8753779519. The cubic root of 133515145 is about 511.1050561227.

It can be divided in two parts, 13351 and 5145, that added together give a square (18496 = 136²).

The spelling of 133515145 in words is "one hundred thirty-three million, five hundred fifteen thousand, one hundred forty-five".