252666133 has 2 divisors, whose sum is σ = 252666134. Its totient is φ = 252666132.

The previous prime is 252666091. The next prime is 252666181. The reversal of 252666133 is 331666252.

252666133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223861444 + 28804689 = 14962^2 + 5367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252666133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252696133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126333066 + 126333067.

It is an arithmetic number, because the mean of its divisors is an integer number (126333067).

Almost surely, 2^252666133 is an apocalyptic number.

It is an amenable number.

252666133 is a deficient number, since it is larger than the sum of its proper divisors (1).

252666133 is an equidigital number, since it uses as much as digits as its factorization.

252666133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 34.

The square root of 252666133 is about 15895.4752366829. The cubic root of 252666133 is about 632.1920224143.

The spelling of 252666133 in words is "two hundred fifty-two million, six hundred sixty-six thousand, one hundred thirty-three".