253051217 has 2 divisors, whose sum is σ = 253051218. Its totient is φ = 253051216.

The previous prime is 253051181. The next prime is 253051219. The reversal of 253051217 is 712150352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207475216 + 45576001 = 14404^2 + 6751^2 .

It is a cyclic number.

It is not a de Polignac number, because 253051217 - 2⁶ = 253051153 is a prime.

Together with 253051219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (253051219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126525608 + 126525609.

It is an arithmetic number, because the mean of its divisors is an integer number (126525609).

Almost surely, 2^253051217 is an apocalyptic number.

It is an amenable number.

253051217 is a deficient number, since it is larger than the sum of its proper divisors (1).

253051217 is an equidigital number, since it uses as much as digits as its factorization.

253051217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 253051217 is about 15907.5836317148. The cubic root of 253051217 is about 632.5130302950.

The spelling of 253051217 in words is "two hundred fifty-three million, fifty-one thousand, two hundred seventeen".