133611253 has 2 divisors, whose sum is σ = 133611254. Its totient is φ = 133611252.

The previous prime is 133611241. The next prime is 133611299. The reversal of 133611253 is 352116331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133125444 + 485809 = 11538^2 + 697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133611253 is a prime.

It is equal to p_7571221 and since 133611253 and 7571221 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133611353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66805626 + 66805627.

It is an arithmetic number, because the mean of its divisors is an integer number (66805627).

Almost surely, 2^133611253 is an apocalyptic number.

It is an amenable number.

133611253 is a deficient number, since it is larger than the sum of its proper divisors (1).

133611253 is an equidigital number, since it uses as much as digits as its factorization.

133611253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 25.

The square root of 133611253 is about 11559.0333938440. The cubic root of 133611253 is about 511.2276626958.

Adding to 133611253 its reverse (352116331), we get a palindrome (485727584).

The spelling of 133611253 in words is "one hundred thirty-three million, six hundred eleven thousand, two hundred fifty-three".