253469221 has 2 divisors, whose sum is σ = 253469222. Its totient is φ = 253469220.

The previous prime is 253469207. The next prime is 253469231. The reversal of 253469221 is 122964352.

253469221 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., 239816196 + 13653025 = 15486^2 + 3695^2 .

It is a cyclic number.

It is not a de Polignac number, because 253469221 - 2¹¹ = 253467173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253469231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126734610 + 126734611.

It is an arithmetic number, because the mean of its divisors is an integer number (126734611).

Almost surely, 2^253469221 is an apocalyptic number.

It is an amenable number.

253469221 is a deficient number, since it is larger than the sum of its proper divisors (1).

253469221 is an equidigital number, since it uses as much as digits as its factorization.

253469221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 253469221 is about 15920.7167238162. The cubic root of 253469221 is about 632.8611120439.

The spelling of 253469221 in words is "two hundred fifty-three million, four hundred sixty-nine thousand, two hundred twenty-one".