253242247 has 2 divisors, whose sum is σ = 253242248. Its totient is φ = 253242246.

The previous prime is 253242233. The next prime is 253242271. The reversal of 253242247 is 742242352.

253242247 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 is a cyclic number.

It is not a de Polignac number, because 253242247 - 2¹¹ = 253240199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253242287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126621123 + 126621124.

It is an arithmetic number, because the mean of its divisors is an integer number (126621124).

Almost surely, 2^253242247 is an apocalyptic number.

253242247 is a deficient number, since it is larger than the sum of its proper divisors (1).

253242247 is an equidigital number, since it uses as much as digits as its factorization.

253242247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 31.

The square root of 253242247 is about 15913.5868678309. The cubic root of 253242247 is about 632.6721529863.

Adding to 253242247 its reverse (742242352), we get a palindrome (995484599).

The spelling of 253242247 in words is "two hundred fifty-three million, two hundred forty-two thousand, two hundred forty-seven".