253215241 has 2 divisors, whose sum is σ = 253215242. Its totient is φ = 253215240.

The previous prime is 253215229. The next prime is 253215247. The reversal of 253215241 is 142512352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201072400 + 52142841 = 14180^2 + 7221^2 .

It is a cyclic number.

It is not a de Polignac number, because 253215241 - 2⁷ = 253215113 is a prime.

It is a super-4 number, since 4×253215241⁴ (a number of 35 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (253215247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126607620 + 126607621.

It is an arithmetic number, because the mean of its divisors is an integer number (126607621).

Almost surely, 2^253215241 is an apocalyptic number.

It is an amenable number.

253215241 is a deficient number, since it is larger than the sum of its proper divisors (1).

253215241 is an equidigital number, since it uses as much as digits as its factorization.

253215241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 253215241 is about 15912.7383250024. The cubic root of 253215241 is about 632.6496625952.

Adding to 253215241 its reverse (142512352), we get a palindrome (395727593).

The spelling of 253215241 in words is "two hundred fifty-three million, two hundred fifteen thousand, two hundred forty-one".