253565303 has 16 divisors (see below), whose sum is σ = 265161600. Its totient is φ = 242305440.

The previous prime is 253565293. The next prime is 253565309. The reversal of 253565303 is 303565352.

It is a cyclic number.

It is not a de Polignac number, because 253565303 - 2⁴ = 253565287 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 253565303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253565309) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 409328 + ... + 409946.

It is an arithmetic number, because the mean of its divisors is an integer number (16572600).

Almost surely, 2^253565303 is an apocalyptic number.

253565303 is a deficient number, since it is larger than the sum of its proper divisors (11596297).

253565303 is a wasteful number, since it uses less digits than its factorization.

253565303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its (nonzero) digits is 40500, while the sum is 32.

The square root of 253565303 is about 15923.7339528140. The cubic root of 253565303 is about 632.9410676817.

The spelling of 253565303 in words is "two hundred fifty-three million, five hundred sixty-five thousand, three hundred three".