252643147 has 2 divisors, whose sum is σ = 252643148. Its totient is φ = 252643146.

The previous prime is 252643093. The next prime is 252643163. The reversal of 252643147 is 741346252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252643147 - 2¹¹ = 252641099 is a prime.

It is not a weakly prime, because it can be changed into another prime (252643177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126321573 + 126321574.

It is an arithmetic number, because the mean of its divisors is an integer number (126321574).

Almost surely, 2^252643147 is an apocalyptic number.

252643147 is a deficient number, since it is larger than the sum of its proper divisors (1).

252643147 is an equidigital number, since it uses as much as digits as its factorization.

252643147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 34.

The square root of 252643147 is about 15894.7521842903. The cubic root of 252643147 is about 632.1728508613.

Adding to 252643147 its reverse (741346252), we get a palindrome (993989399).

The spelling of 252643147 in words is "two hundred fifty-two million, six hundred forty-three thousand, one hundred forty-seven".