253404441 has 6 divisors (see below), whose sum is σ = 366028650. Its totient is φ = 168936288.

The previous prime is 253404439. The next prime is 253404443. The reversal of 253404441 is 144404352.

It is a happy number.

253404441 is a `hidden beast` number, since 253 + 404 + 4 + 4 + 1 = 666.

253404441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (253404439) and next prime (253404443).

It can be written as a sum of positive squares in only one way, i.e., 252810000 + 594441 = 15900^2 + 771^2 .

It is not a de Polignac number, because 253404441 - 2¹ = 253404439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253404443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14078016 + ... + 14078033.

It is an arithmetic number, because the mean of its divisors is an integer number (61004775).

Almost surely, 2^253404441 is an apocalyptic number.

It is an amenable number.

253404441 is a deficient number, since it is larger than the sum of its proper divisors (112624209).

253404441 is a wasteful number, since it uses less digits than its factorization.

253404441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28156055 (or 28156052 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 253404441 is about 15918.6821376645. The cubic root of 253404441 is about 632.8071932870.

Adding to 253404441 its reverse (144404352), we get a palindrome (397808793).

The spelling of 253404441 in words is "two hundred fifty-three million, four hundred four thousand, four hundred forty-one".