133532605 has 16 divisors (see below), whose sum is σ = 162574128. Its totient is φ = 105280000.

The previous prime is 133532527. The next prime is 133532621. The reversal of 133532605 is 506235331.

It can be written as a sum of positive squares in 8 ways, for example, as 17690436 + 115842169 = 4206^2 + 10763^2 .

It is not a de Polignac number, because 133532605 - 2¹¹ = 133530557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141435 + ... + 142375.

It is an arithmetic number, because the mean of its divisors is an integer number (10160883).

Almost surely, 2^133532605 is an apocalyptic number.

It is an amenable number.

133532605 is a deficient number, since it is larger than the sum of its proper divisors (29041523).

133532605 is a wasteful number, since it uses less digits than its factorization.

133532605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 133532605 is about 11555.6308784938. The cubic root of 133532605 is about 511.1273345074.

Adding to 133532605 its reverse (506235331), we get a palindrome (639767936).

The spelling of 133532605 in words is "one hundred thirty-three million, five hundred thirty-two thousand, six hundred five".