252811 has 4 divisors (see below), whose sum is σ = 272272. Its totient is φ = 233352.

The previous prime is 252779. The next prime is 252817. The reversal of 252811 is 118252.

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

It is a cyclic number.

It is not a de Polignac number, because 252811 - 2⁵ = 252779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252817) 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, 9711 + ... + 9736.

It is an arithmetic number, because the mean of its divisors is an integer number (68068).

2²⁵²⁸¹¹ is an apocalyptic number.

252811 is a deficient number, since it is larger than the sum of its proper divisors (19461).

252811 is a wasteful number, since it uses less digits than its factorization.

252811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19460.

The product of its digits is 160, while the sum is 19.

The square root of 252811 is about 502.8031423927. The cubic root of 252811 is about 63.2312822490.

The spelling of 252811 in words is "two hundred fifty-two thousand, eight hundred eleven".