253502245 has 4 divisors (see below), whose sum is σ = 304202700. Its totient is φ = 202801792.

The previous prime is 253502213. The next prime is 253502299. The reversal of 253502245 is 542205352.

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 54184321 + 199317924 = 7361^2 + 14118^2 .

It is a cyclic number.

It is not a de Polignac number, because 253502245 - 2⁵ = 253502213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25350220 + ... + 25350229.

It is an arithmetic number, because the mean of its divisors is an integer number (76050675).

Almost surely, 2^253502245 is an apocalyptic number.

It is an amenable number.

253502245 is a deficient number, since it is larger than the sum of its proper divisors (50700455).

253502245 is an equidigital number, since it uses as much as digits as its factorization.

253502245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50700454.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 253502245 is about 15921.7538292740. The cubic root of 253502245 is about 632.8885955883. Note that the first 3 decimals are identical.

Adding to 253502245 its reverse (542205352), we get a palindrome (795707597).

The spelling of 253502245 in words is "two hundred fifty-three million, five hundred two thousand, two hundred forty-five".