253208813 has 12 divisors (see below), whose sum is σ = 299112768. Its totient is φ = 212481360.

The previous prime is 253208807. The next prime is 253208861. The reversal of 253208813 is 318802352.

It is not a de Polignac number, because 253208813 - 2¹⁰ = 253207789 is a prime.

It is a super-2 number, since 2×253208813² = 128229405961737938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 253208813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253208213) 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 11 ways as a sum of consecutive naturals, for example, 66245 + ... + 69962.

It is an arithmetic number, because the mean of its divisors is an integer number (24926064).

Almost surely, 2^253208813 is an apocalyptic number.

It is an amenable number.

253208813 is a deficient number, since it is larger than the sum of its proper divisors (45903955).

253208813 is a wasteful number, since it uses less digits than its factorization.

253208813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136244 (or 136231 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 253208813 is about 15912.5363471698. The cubic root of 253208813 is about 632.6443091701.

The spelling of 253208813 in words is "two hundred fifty-three million, two hundred eight thousand, eight hundred thirteen".