253134447 has 4 divisors (see below), whose sum is σ = 337512600. Its totient is φ = 168756296.

The previous prime is 253134439. The next prime is 253134457. The reversal of 253134447 is 744431352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253134447 - 2³ = 253134439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253134457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42189072 + ... + 42189077.

It is an arithmetic number, because the mean of its divisors is an integer number (84378150).

Almost surely, 2^253134447 is an apocalyptic number.

253134447 is a deficient number, since it is larger than the sum of its proper divisors (84378153).

253134447 is an equidigital number, since it uses as much as digits as its factorization.

253134447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84378152.

The product of its digits is 40320, while the sum is 33.

The square root of 253134447 is about 15910.1994644945. The cubic root of 253134447 is about 632.5823684176.

Adding to 253134447 its reverse (744431352), we get a palindrome (997565799).

The spelling of 253134447 in words is "two hundred fifty-three million, one hundred thirty-four thousand, four hundred forty-seven".