133252249 has 4 divisors (see below), whose sum is σ = 143502436. Its totient is φ = 123002064.

The previous prime is 133252241. The next prime is 133252253. The reversal of 133252249 is 942252331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15681600 + 117570649 = 3960^2 + 10843^2 .

It is a cyclic number.

It is not a de Polignac number, because 133252249 - 2³ = 133252241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133252249.

It is not an unprimeable number, because it can be changed into a prime (133252241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5125074 + ... + 5125099.

It is an arithmetic number, because the mean of its divisors is an integer number (35875609).

Almost surely, 2^133252249 is an apocalyptic number.

It is an amenable number.

133252249 is a deficient number, since it is larger than the sum of its proper divisors (10250187).

133252249 is a wasteful number, since it uses less digits than its factorization.

133252249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10250186.

The product of its digits is 12960, while the sum is 31.

The square root of 133252249 is about 11543.4937952078. The cubic root of 133252249 is about 510.7693744469.

The spelling of 133252249 in words is "one hundred thirty-three million, two hundred fifty-two thousand, two hundred forty-nine".