252851 has 4 divisors (see below), whose sum is σ = 261600. Its totient is φ = 244104.

The previous prime is 252829. The next prime is 252869. The reversal of 252851 is 158252.

252851 = 79² + 80² + ... + 107².

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252851 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 252851.

It is not an unprimeable number, because it can be changed into a prime (252881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4331 + ... + 4388.

It is an arithmetic number, because the mean of its divisors is an integer number (65400).

2²⁵²⁸⁵¹ is an apocalyptic number.

252851 is a deficient number, since it is larger than the sum of its proper divisors (8749).

252851 is an equidigital number, since it uses as much as digits as its factorization.

252851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8748.

The product of its digits is 800, while the sum is 23.

The square root of 252851 is about 502.8429178183. The cubic root of 252851 is about 63.2346169113.

The spelling of 252851 in words is "two hundred fifty-two thousand, eight hundred fifty-one".