253323745 has 8 divisors (see below), whose sum is σ = 307122984. Its totient is φ = 200569344.

The previous prime is 253323737. The next prime is 253323773. The reversal of 253323745 is 547323352.

It can be written as a sum of positive squares in 4 ways, for example, as 3968064 + 249355681 = 1992^2 + 15791^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253323745 - 2³ = 253323737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253323745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260674 + ... + 261643.

It is an arithmetic number, because the mean of its divisors is an integer number (38390373).

Almost surely, 2^253323745 is an apocalyptic number.

It is an amenable number.

253323745 is a deficient number, since it is larger than the sum of its proper divisors (53799239).

253323745 is an equidigital number, since it uses as much as digits as its factorization.

253323745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522419.

The product of its digits is 75600, while the sum is 34.

The square root of 253323745 is about 15916.1473039175. The cubic root of 253323745 is about 632.7400142082.

The spelling of 253323745 in words is "two hundred fifty-three million, three hundred twenty-three thousand, seven hundred forty-five".