252666241 has 4 divisors (see below), whose sum is σ = 261378900. Its totient is φ = 243953584.

The previous prime is 252666221. The next prime is 252666287. The reversal of 252666241 is 142666252.

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 70308225 + 182358016 = 8385^2 + 13504^2 .

It is a cyclic number.

It is not a de Polignac number, because 252666241 - 2⁹ = 252665729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252666197 and 252666206.

It is not an unprimeable number, because it can be changed into a prime (252666221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4356286 + ... + 4356343.

It is an arithmetic number, because the mean of its divisors is an integer number (65344725).

Almost surely, 2^252666241 is an apocalyptic number.

It is an amenable number.

252666241 is a deficient number, since it is larger than the sum of its proper divisors (8712659).

252666241 is an equidigital number, since it uses as much as digits as its factorization.

252666241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712658.

The product of its digits is 34560, while the sum is 34.

The square root of 252666241 is about 15895.4786338757. The cubic root of 252666241 is about 632.1921124894.

The spelling of 252666241 in words is "two hundred fifty-two million, six hundred sixty-six thousand, two hundred forty-one".