253885 has 4 divisors (see below), whose sum is σ = 304668. Its totient is φ = 203104.

The previous prime is 253879. The next prime is 253901. The reversal of 253885 is 588352.

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 158404 + 95481 = 398^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 253885 - 2⁵ = 253853 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25384 + ... + 25393.

It is an arithmetic number, because the mean of its divisors is an integer number (76167).

2²⁵³⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

253885 is a deficient number, since it is larger than the sum of its proper divisors (50783).

253885 is an equidigital number, since it uses as much as digits as its factorization.

253885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50782.

The product of its digits is 9600, while the sum is 31.

The square root of 253885 is about 503.8700229226. The cubic root of 253885 is about 63.3206961551.

The spelling of 253885 in words is "two hundred fifty-three thousand, eight hundred eighty-five".