252040307 has 2 divisors, whose sum is σ = 252040308. Its totient is φ = 252040306.

The previous prime is 252040303. The next prime is 252040333. The reversal of 252040307 is 703040252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252040307 - 2² = 252040303 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252040303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126020153 + 126020154.

It is an arithmetic number, because the mean of its divisors is an integer number (126020154).

Almost surely, 2^252040307 is an apocalyptic number.

252040307 is a deficient number, since it is larger than the sum of its proper divisors (1).

252040307 is an equidigital number, since it uses as much as digits as its factorization.

252040307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 252040307 is about 15875.7773667937. Note that the first 3 decimals coincide. The cubic root of 252040307 is about 631.6696343600.

Adding to 252040307 its reverse (703040252), we get a palindrome (955080559).

The spelling of 252040307 in words is "two hundred fifty-two million, forty thousand, three hundred seven".