133497 has 24 divisors (see below), whose sum is σ = 238784. Its totient is φ = 69984.

The previous prime is 133493. The next prime is 133499. The reversal of 133497 is 794331.

It is not a de Polignac number, because 133497 - 2² = 133493 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

Its product of digits (2268) is a multiple of the sum of its prime factors (189).

It is a self number, because there is not a number n which added to its sum of digits gives 133497.

It is not an unprimeable number, because it can be changed into a prime (133493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 738 + ... + 900.

2¹³³⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

133497 is a deficient number, since it is larger than the sum of its proper divisors (105287).

133497 is a wasteful number, since it uses less digits than its factorization.

133497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 186 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 133497 is about 365.3724127517. The cubic root of 133497 is about 51.1081901642.

It can be divided in two parts, 1334 and 97, that added together give a triangular number (1431 = T₅₃).

The spelling of 133497 in words is "one hundred thirty-three thousand, four hundred ninety-seven".