253881 has 8 divisors (see below), whose sum is σ = 376160. Its totient is φ = 169236.

The previous prime is 253879. The next prime is 253901. The reversal of 253881 is 188352.

It is a happy number.

It is not a de Polignac number, because 253881 - 2¹ = 253879 is a prime.

It is a super-2 number, since 2×253881² = 128911124322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9403 = 253881 / (2 + 5 + 3 + 8 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4675 + ... + 4728.

It is an arithmetic number, because the mean of its divisors is an integer number (47020).

2²⁵³⁸⁸¹ is an apocalyptic number.

It is an amenable number.

253881 is a deficient number, since it is larger than the sum of its proper divisors (122279).

253881 is an equidigital number, since it uses as much as digits as its factorization.

253881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412 (or 9406 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 253881 is about 503.8660536293. The cubic root of 253881 is about 63.3203636107.

The spelling of 253881 in words is "two hundred fifty-three thousand, eight hundred eighty-one".