253028005 has 4 divisors (see below), whose sum is σ = 303633612. Its totient is φ = 202422400.

The previous prime is 253028003. The next prime is 253028021. The reversal of 253028005 is 500820352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148620481 + 104407524 = 12191^2 + 10218^2 .

It is not a de Polignac number, because 253028005 - 2¹ = 253028003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253028003) 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, 25302796 + ... + 25302805.

It is an arithmetic number, because the mean of its divisors is an integer number (75908403).

Almost surely, 2^253028005 is an apocalyptic number.

It is an amenable number.

253028005 is a deficient number, since it is larger than the sum of its proper divisors (50605607).

253028005 is an equidigital number, since it uses as much as digits as its factorization.

253028005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50605606.

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

The square root of 253028005 is about 15906.8540258594. The cubic root of 253028005 is about 632.4936898869.

Adding to 253028005 its reverse (500820352), we get a palindrome (753848357).

The spelling of 253028005 in words is "two hundred fifty-three million, twenty-eight thousand, five".