253840297 has 2 divisors, whose sum is σ = 253840298. Its totient is φ = 253840296.

The previous prime is 253840291. The next prime is 253840303. The reversal of 253840297 is 792048352.

253840297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (253840291) and next prime (253840303).

It can be written as a sum of positive squares in only one way, i.e., 252047376 + 1792921 = 15876^2 + 1339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253840297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (253840291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126920148 + 126920149.

It is an arithmetic number, because the mean of its divisors is an integer number (126920149).

Almost surely, 2^253840297 is an apocalyptic number.

It is an amenable number.

253840297 is a deficient number, since it is larger than the sum of its proper divisors (1).

253840297 is an equidigital number, since it uses as much as digits as its factorization.

253840297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 253840297 is about 15932.3663339756. The cubic root of 253840297 is about 633.1697952328.

The spelling of 253840297 in words is "two hundred fifty-three million, eight hundred forty thousand, two hundred ninety-seven".