133613249 has 20 divisors (see below), whose sum is σ = 170076720. Its totient is φ = 104093640.

The previous prime is 133613239. The next prime is 133613257. The reversal of 133613249 is 942316331.

It is not a de Polignac number, because 133613249 - 2¹² = 133609153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133613239) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23882 + ... + 28940.

It is an arithmetic number, because the mean of its divisors is an integer number (8503836).

Almost surely, 2^133613249 is an apocalyptic number.

It is an amenable number.

133613249 is a deficient number, since it is larger than the sum of its proper divisors (36463471).

133613249 is an frugal number, since it uses more digits than its factorization.

133613249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5098 (or 5077 counting only the distinct ones).

The product of its digits is 11664, while the sum is 32.

The square root of 133613249 is about 11559.1197329208. The cubic root of 133613249 is about 511.2302084028.

The spelling of 133613249 in words is "one hundred thirty-three million, six hundred thirteen thousand, two hundred forty-nine".