133522 has 8 divisors (see below), whose sum is σ = 202572. Its totient is φ = 66000.

The previous prime is 133519. The next prime is 133541. The reversal of 133522 is 225331.

It can be written as a sum of positive squares in 2 ways, for example, as 108241 + 25281 = 329^2 + 159^2 .

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

It is a d-powerful number, because it can be written as 1 + 3² + 5³ + 3⁷ + 2⁷ + 2¹⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 133496 and 133505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129 + ... + 532.

2¹³³⁵²² is an apocalyptic number.

133522 is a deficient number, since it is larger than the sum of its proper divisors (69050).

133522 is a wasteful number, since it uses less digits than its factorization.

133522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764.

The product of its digits is 180, while the sum is 16.

The square root of 133522 is about 365.4066228190. The cubic root of 133522 is about 51.1113803108. Note that the first 3 decimals are identical.

Adding to 133522 its reverse (225331), we get a palindrome (358853).

Subtracting 133522 from its reverse (225331), we obtain a square (91809 = 303²).

The spelling of 133522 in words is "one hundred thirty-three thousand, five hundred twenty-two".