133502 has 4 divisors (see below), whose sum is σ = 200256. Its totient is φ = 66750.

The previous prime is 133499. The next prime is 133519. The reversal of 133502 is 205331.

133502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 205331 = 7 ⋅29333.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33374 + ... + 33377.

It is an arithmetic number, because the mean of its divisors is an integer number (50064).

2¹³³⁵⁰² is an apocalyptic number.

133502 is a deficient number, since it is larger than the sum of its proper divisors (66754).

133502 is an equidigital number, since it uses as much as digits as its factorization.

133502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66753.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 133502 is about 365.3792550214. The cubic root of 133502 is about 51.1088282254.

Adding to 133502 its reverse (205331), we get a palindrome (338833).

It can be divided in two parts, 133 and 502, that multiplied together give a palindrome (66766).

The spelling of 133502 in words is "one hundred thirty-three thousand, five hundred two".