253794217 has 2 divisors, whose sum is σ = 253794218. Its totient is φ = 253794216.

The previous prime is 253794199. The next prime is 253794227. The reversal of 253794217 is 712497352.

253794217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182493081 + 71301136 = 13509^2 + 8444^2 .

It is a cyclic number.

It is not a de Polignac number, because 253794217 - 2⁷ = 253794089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253794217.

It is not a weakly prime, because it can be changed into another prime (253794227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126897108 + 126897109.

It is an arithmetic number, because the mean of its divisors is an integer number (126897109).

Almost surely, 2^253794217 is an apocalyptic number.

It is an amenable number.

253794217 is a deficient number, since it is larger than the sum of its proper divisors (1).

253794217 is an equidigital number, since it uses as much as digits as its factorization.

253794217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 253794217 is about 15930.9201554712. The cubic root of 253794217 is about 633.1314795015.

The spelling of 253794217 in words is "two hundred fifty-three million, seven hundred ninety-four thousand, two hundred seventeen".