253684855 has 16 divisors (see below), whose sum is σ = 309333024. Its totient is φ = 199687680.

The previous prime is 253684853. The next prime is 253684861. The reversal of 253684855 is 558486352.

It is not a de Polignac number, because 253684855 - 2¹ = 253684853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253684853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295587 + ... + 296443.

It is an arithmetic number, because the mean of its divisors is an integer number (19333314).

Almost surely, 2^253684855 is an apocalyptic number.

253684855 is a deficient number, since it is larger than the sum of its proper divisors (55648169).

253684855 is an equidigital number, since it uses as much as digits as its factorization.

253684855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746.

The product of its digits is 1152000, while the sum is 46.

The square root of 253684855 is about 15927.4874038563. The cubic root of 253684855 is about 633.0405259283.

The spelling of 253684855 in words is "two hundred fifty-three million, six hundred eighty-four thousand, eight hundred fifty-five".