253140647 has 2 divisors, whose sum is σ = 253140648. Its totient is φ = 253140646.

The previous prime is 253140611. The next prime is 253140649. The reversal of 253140647 is 746041352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253140647 - 2²² = 248946343 is a prime.

Together with 253140649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253140649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126570323 + 126570324.

It is an arithmetic number, because the mean of its divisors is an integer number (126570324).

Almost surely, 2^253140647 is an apocalyptic number.

253140647 is a deficient number, since it is larger than the sum of its proper divisors (1).

253140647 is an equidigital number, since it uses as much as digits as its factorization.

253140647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 253140647 is about 15910.3943068674. The cubic root of 253140647 is about 632.5875329704.

Adding to 253140647 its reverse (746041352), we get a palindrome (999181999).

The spelling of 253140647 in words is "two hundred fifty-three million, one hundred forty thousand, six hundred forty-seven".