253242365 has 4 divisors (see below), whose sum is σ = 303890844. Its totient is φ = 202593888.

The previous prime is 253242347. The next prime is 253242371. The reversal of 253242365 is 563242352.

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 171845881 + 81396484 = 13109^2 + 9022^2 .

It is a cyclic number.

It is not a de Polignac number, because 253242365 - 2¹⁴ = 253225981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25324232 + ... + 25324241.

It is an arithmetic number, because the mean of its divisors is an integer number (75972711).

Almost surely, 2^253242365 is an apocalyptic number.

It is an amenable number.

253242365 is a deficient number, since it is larger than the sum of its proper divisors (50648479).

253242365 is an equidigital number, since it uses as much as digits as its factorization.

253242365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50648478.

The product of its digits is 43200, while the sum is 32.

The square root of 253242365 is about 15913.5905753541. The cubic root of 253242365 is about 632.6722512523.

The spelling of 253242365 in words is "two hundred fifty-three million, two hundred forty-two thousand, three hundred sixty-five".