133504529 has 6 divisors (see below), whose sum is σ = 134069814. Its totient is φ = 132940800.

The previous prime is 133504499. The next prime is 133504531. The reversal of 133504529 is 925405331.

It can be written as a sum of positive squares in 3 ways, for example, as 131148304 + 2356225 = 11452^2 + 1535^2 .

It is not a de Polignac number, because 133504529 - 2¹⁶ = 133438993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133504495 and 133504504.

It is not an unprimeable number, because it can be changed into a prime (133504229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 231089 + ... + 231665.

It is an arithmetic number, because the mean of its divisors is an integer number (22344969).

Almost surely, 2^133504529 is an apocalyptic number.

It is an amenable number.

133504529 is a deficient number, since it is larger than the sum of its proper divisors (565285).

133504529 is an frugal number, since it uses more digits than its factorization.

133504529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 133504529 is about 11554.4159956270. The cubic root of 133504529 is about 511.0915095070.

The spelling of 133504529 in words is "one hundred thirty-three million, five hundred four thousand, five hundred twenty-nine".