252281 has 4 divisors (see below), whose sum is σ = 258192. Its totient is φ = 246372.

The previous prime is 252277. The next prime is 252283. The reversal of 252281 is 182252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252281 - 2² = 252277 is a prime.

It is a super-2 number, since 2×252281² = 127291405922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 252281.

It is not an unprimeable number, because it can be changed into a prime (252283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891 + ... + 2976.

It is an arithmetic number, because the mean of its divisors is an integer number (64548).

2²⁵²²⁸¹ is an apocalyptic number.

It is an amenable number.

252281 is a deficient number, since it is larger than the sum of its proper divisors (5911).

252281 is an equidigital number, since it uses as much as digits as its factorization.

252281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5910.

The product of its digits is 320, while the sum is 20.

The square root of 252281 is about 502.2758206404. The cubic root of 252281 is about 63.1870647297.

The spelling of 252281 in words is "two hundred fifty-two thousand, two hundred eighty-one".