253252921 has 4 divisors (see below), whose sum is σ = 258031332. Its totient is φ = 248474512.

The previous prime is 253252903. The next prime is 253252933. The reversal of 253252921 is 129252352.

253252921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 112593321 + 140659600 = 10611^2 + 11860^2 .

It is a cyclic number.

It is not a de Polignac number, because 253252921 - 2⁹ = 253252409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253252421) 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, 2389126 + ... + 2389231.

It is an arithmetic number, because the mean of its divisors is an integer number (64507833).

Almost surely, 2^253252921 is an apocalyptic number.

It is an amenable number.

253252921 is a deficient number, since it is larger than the sum of its proper divisors (4778411).

253252921 is an equidigital number, since it uses as much as digits as its factorization.

253252921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778410.

The product of its digits is 10800, while the sum is 31.

The square root of 253252921 is about 15913.9222380908. The cubic root of 253252921 is about 632.6810417713.

The spelling of 253252921 in words is "two hundred fifty-three million, two hundred fifty-two thousand, nine hundred twenty-one".